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Ning J, Zhang Q, Liang W, Zhang R, Xing Z, Jin L, Zhang L. Bibliometric and visualized analysis of posterior chamber phakic intraocular lens research between 2003 and 2023. Front Med (Lausanne) 2024; 11:1391327. [PMID: 38651068 PMCID: PMC11034429 DOI: 10.3389/fmed.2024.1391327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 03/27/2024] [Indexed: 04/25/2024] Open
Abstract
Introduction Myopia is causing a major public health concern, with its prevalence increasing globally. This study aimed to discuss posterior chamber phakic intraocular lens (pIOL) research publication trends and hotspots over the past 20 years. Methods Bibliometric analysis was performed using the Web Science Core Collection to investigate posterior-chamber pIOL research publication trends. The extracted records were analyzed, and a knowledge map was built using VOSviewer v.1.6.20. The analysis included visualizing the annual publication count, countries/regions distribution, international and institutional collaborations, author productivity, and journal contribution, in addition to identifying knowledge bases and hotspots. Burst keywords were extracted using CiteSpace v.6.1.R. Results In total, 791 articles on posterior chamber pIOLs published between 2003 and 2023 were retrieved. China had the highest number of publications, whereas Japanese papers received the most citations. Fudan University had the highest number of publications, with articles from Kitasato University having the highest number of citations. Regarding individual research, Xingtao Zhou has published the most significant number of articles, and Shimizu Kimiya had the highest number of citations. The top productive/influential journal was 'Journal of Cataract & Refractive Surgery'. The top cited references primarily focused on reporting the clinical outcomes of implantable collamer lens (ICL) for individuals with moderate to high myopia. The keywords primarily formed four clusters: posterior chamber pIOL clinical outcomes for myopic astigmatism correction, posterior chamber pIOL implantation complications, ICL size selection and postoperative vault predictions, and postoperative visual quality following posterior chamber pIOL implantation. Conclusion This study presents the first bibliometric analysis of research trends in posterior chamber pIOL over the past two decades. We investigated the current state and emerging trends of global collaboration and research focal points in this field, offering fresh insights and guidance for researchers.
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Affiliation(s)
- Jiliang Ning
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Qiaosi Zhang
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Wei Liang
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Rui Zhang
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Zequn Xing
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Lin Jin
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
| | - Lijun Zhang
- Department of Ophthalmology, The Third People’s Hospital of Dalian, Dalian, China
- Department of Ophthalmology, Dalian Municipal Eye Hospital, Dalian, China
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Dalian, China
- Liaoning Provincial Optometry Technology Engineering Research Center, Dalian, China
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Li J, Chen CL, Li JQ, Liang XL, Zhang C. Rhegmatogenous retinal detachment in highly myopic eyes with implantable collamer lens. Int J Ophthalmol 2024; 17:392-396. [PMID: 38371248 PMCID: PMC10827626 DOI: 10.18240/ijo.2024.02.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 11/29/2023] [Indexed: 02/20/2024] Open
Abstract
AIM To investigate the clinical characteristics, treatment methods and outcomes of rhegmatogenous retinal detachment (RRD) in highly myopic eyes with implantable collamer lens (ICL). METHODS High myopia patients who received treatment for nontraumatic RRD after ICL implantation surgery at the Retinal Department of Zhongshan Ophthalmic Center from Jan 2018 to Dec 2022 were reviewed. Comprehensive ophthalmologic examinations including visual acuity measurement and digital fundus photography were performed in each patient. RESULTS A total of nine RRD eyes from nine patients who received V4c-ICL implantation were included. The mean time from ICL implantation surgery to the diagnosis of RRD was 32.44±22.56mo (range, 1-60mo). At the initial visit for RRD, giant retinal tear (GRT), horseshoe tear, simple round hole, and horseshoe tear combined with round hole were detected in 3, 3, 2, and 1 eye(s), respectively, with macula-off in eyes. Eight patients received surgical treatment, and one patient was treated by retinal laser photocoagulation alone. The ICL was preserved in 7 eyes. At the last follow-up, the mean best corrected visual acuity (BCVA) improved significantly from 1.76±1.06 logMAR at presentation to 0.81±1.01 logMAR (P=0.035), and no case of recurrent retinal detachment was found. CONCLUSION The morphological presentation of retinal breaks is diverse in this study. The ICL can be preserved in most cases during the course of retinal detachment repair surgery in our data, companied with acceptable visual and anatomical outcomes.
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Affiliation(s)
- Jun Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, Guangdong Province, China
| | - Chong-Lin Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, Guangdong Province, China
| | - Jia-Qing Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, Guangdong Province, China
| | - Xiao-Ling Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, Guangdong Province, China
| | - Chun Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, Guangdong Province, China
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Gong D, Deng S, Dang K, Yan Z, Wang J. Causes and management strategies for elevated intraocular pressure after implantable collamer lens implantation. Front Med (Lausanne) 2024; 11:1351272. [PMID: 38384405 PMCID: PMC10879591 DOI: 10.3389/fmed.2024.1351272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/25/2024] [Indexed: 02/23/2024] Open
Abstract
With the widespread application of Implantable Collamer Lens (ICL) implantation surgery in the field of myopia correction, a comprehensive understanding of its potential complications, especially those related to intraocular pressure (IOP), becomes crucial. This article systematically reviews various complications that may lead to IOP elevation after ICL surgery. Firstly, common complications after ICL surgery, including residual viscoelastic, steroid response, and excessive vault of the ICL, are detailed, emphasizing their potential impact on intraocular pressure. Regarding residual viscoelastic, we delve into its direct relationship with postoperative elevated IOP and possible preventive measures. For steroid response, we stress the importance of timely adjustment of steroid therapy and monitoring intraocular pressure. Additionally, excessive vault of the ICL is considered a significant potential issue, and we elaborate on its mechanism and possible management methods. In further discussion, we focus on relatively rare complications such as Toxic Anterior Segment Syndrome (TASS), Urrets-Zavalia Syndrome (UZS), Pigment Dispersion Syndrome (PDS), and malignant glaucoma. For these relatively rare complications, this review thoroughly explores their potential mechanisms, emphasizes the importance of prevention, and provides guidance for early diagnosis and treatment. This is a comprehensible review that aims to offer eye care professionals a comprehensive understanding and effective management guidance for complications of elevated IOP after ICL surgery, ultimately providing optimal care for patients' visual health.
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Affiliation(s)
- Di Gong
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, Guangdong, China
| | - Simin Deng
- The 2nd Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen, China
| | - Kuanrong Dang
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, Guangdong, China
| | - Zonghui Yan
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, Guangdong, China
| | - Jiantao Wang
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, Guangdong, China
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Khokhar S, Kumar S, Rani D, Gupta N. Management of inadvertent insertion of misfolded implantable collamer lens. Oman J Ophthalmol 2024; 17:148-149. [PMID: 38524348 PMCID: PMC10957066 DOI: 10.4103/ojo.ojo_182_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 03/17/2023] [Accepted: 01/02/2024] [Indexed: 03/26/2024] Open
Affiliation(s)
- Sudarshan Khokhar
- Dr. Rajendra Prasad Centre for Ophthalmic Sciences, AIIMS, New Delhi, India
| | - Saumya Kumar
- Dr. Rajendra Prasad Centre for Ophthalmic Sciences, AIIMS, New Delhi, India
| | - Deeksha Rani
- Dr. Rajendra Prasad Centre for Ophthalmic Sciences, AIIMS, New Delhi, India
| | - Nayan Gupta
- Dr. Rajendra Prasad Centre for Ophthalmic Sciences, AIIMS, New Delhi, India
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Xiong L, Wu J, Du H, Wang Z. Comparison of formulas in the implantable collamer lens vault prediction. Medicine (Baltimore) 2023; 102:e36542. [PMID: 38115275 PMCID: PMC10727627 DOI: 10.1097/md.0000000000036542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/01/2023] [Accepted: 11/17/2023] [Indexed: 12/21/2023] Open
Abstract
To compare the predictability of different formulas in the postoperative vault of an implantable collamer lens (ICL) surgery and assist physicians for formula selection in ICL implantation. This is a retrospective study. Patients who underwent ICL implantation between August 31, 2021 and October 29, 2021 at our clinic were reviewed. The clinical data, predicted ICL sizes and vaults, actual ICL size implanted and vaults at 1 month after surgery, and corresponding prediction formulas used were collected and analyzed. This study included 140 eyes from 72 patients (15 males and 57 females). Differences between ICL sizes recommended by the Visian ICL Online Calculation & Ordering System (OCOS) and NK formula (Version. 3) or KS formula (Version. 4) were statistically significant (P < .0001), except for the recommended ICL sizes between the NK and KS formulas (P > .05). Better consistency between predicted ICL vaults and achieved ICL vaults was observed when using the KS formula compared to the NK formula. The actual ICL vaults were 250 to 750 μm at 1 month after surgery in 66.4%, 76.5%, and 80.5% eyes of the OCOS, NK, and KS groups, respectively. There was significant difference between the OCOS and KS groups (P < .05), especially in the 12.6 mm ICL group. The KS formula is the most accurate formula for recommending an ICL size and vault prediction when compared to the NK formula and OCOS. Further studies for a more accurate formula are warranted.
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Affiliation(s)
- Lu Xiong
- Department of Refractive Surgery, Aier Eye Hospital, Jinan University, Guangzhou, Guangdong Province, China
| | - Jiawei Wu
- Department of Refractive Surgery, Aier Eye Hospital, Jinan University, Guangzhou, Guangdong Province, China
| | - Huiyi Du
- Department of Refractive Surgery, Aier Eye Hospital, Jinan University, Guangzhou, Guangdong Province, China
| | - Zheng Wang
- Department of Refractive Surgery, Aier Eye Hospital, Jinan University, Guangzhou, Guangdong Province, China
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Fang B, Zhu QJ, Yang H, Fan LC. Vault predicting after implantable collamer lens implantation using random forest network based on different features in ultrasound biomicroscopy images. Int J Ophthalmol 2023; 16:1561-1567. [PMID: 37854385 PMCID: PMC10559038 DOI: 10.18240/ijo.2023.10.01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 08/02/2023] [Indexed: 10/20/2023] Open
Abstract
AIM To analyze ultrasound biomicroscopy (UBM) images using random forest network to find new features to make predictions about vault after implantable collamer lens (ICL) implantation. METHODS A total of 450 UBM images were collected from the Lixiang Eye Hospital to provide the patient's preoperative parameters as well as the vault of the ICL after implantation. The vault was set as the prediction target, and the input elements were mainly ciliary sulcus shape parameters, which included 6 angular parameters, 2 area parameters, and 2 parameters, distance between ciliary sulci, and anterior chamber height. A random forest regression model was applied to predict the vault, with the number of base estimators (n_estimators) of 2000, the maximum tree depth (max_depth) of 17, the number of tree features (max_features) of Auto, and the random state (random_state) of 40.0. RESULTS Among the parameters selected in this study, the distance between ciliary sulci had a greater importance proportion, reaching 52% before parameter optimization is performed, and other features had less influence, with an importance proportion of about 5%. The importance of the distance between the ciliary sulci increased to 53% after parameter optimization, and the importance of angle 3 and area 1 increased to 5% and 8% respectively, while the importance of the other parameters remained unchanged, and the distance between the ciliary sulci was considered the most important feature. Other features, although they accounted for a relatively small proportion, also had an impact on the vault prediction. After parameter optimization, the best prediction results were obtained, with a predicted mean value of 763.688 µm and an actual mean value of 776.9304 µm. The R2 was 0.4456 and the root mean square error was 201.5166. CONCLUSION A study based on UBM images using random forest network can be performed for prediction of the vault after ICL implantation and can provide some reference for ICL size selection.
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Affiliation(s)
- Bin Fang
- School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215100, Jiangsu Province, China
| | - Qiu-Jian Zhu
- Lixiang Eye Hospital of Soochow University, Suzhou 215021 Jiangsu Province, China
| | - Hui Yang
- School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215100, Jiangsu Province, China
| | - Li-Cheng Fan
- School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215100, Jiangsu Province, China
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Zhang Q, Wu Y, Huang H, Qin G, Li L, Chen J, Che H, Xu L, Moore JE, He W, Yu S, Pazo EE, He X. The influence of pupil diameter upon and subjective quality of vision following implantable collamer lens (ICL V4c) implantation: An observational study. Medicine (Baltimore) 2023; 102:e35198. [PMID: 37800803 PMCID: PMC10553097 DOI: 10.1097/md.0000000000035198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 08/22/2023] [Indexed: 10/07/2023] Open
Abstract
This study aimed to assess the change in pupil size and its influence on subjective quality of vision (QoV) in subjects with implanted collamer lenses (ICLs). This retrospective study assessed 53 participants (53 eyes) implanted with ICL (V4c) and categorized them into incremental groups according to pupil diameter. Preoperative and postoperative photopic and mesopic pupil diameter, uncorrected distance visual acuity (UDVA), and QoV questionnaire scores were assessed and compared. Postoperatively, at 3 months, UDVA was -0.10 ± 0.06 logarithm of the minimum angle of resolution (LogMAR), and mean QoV for day and night was 9.34 ± 0.76 and 8.58 ± 1.29, respectively. The mean mesopic and photopic pupil diameters were 6.59 ± 0.79 mm and 4.61 ± 0.74 mm, respectively. Photopic pupil diameter negatively correlated with "QoV day" (Rs = -0.413, P = .001), positively correlated with "haloes" (Rs = 0.568*, P < .001) and "blurred vision" (Rs = 0.243, P = .04) respectively. Mesopic pupil diameter negatively correlated with "QoV night" (Rs = -0.426, P = .001), positively correlated with "haloes" (Rs = 0.624*, P < .001), "starburst" (Rs = 0.233, P = .046) and "difficulty focusing" (Rs = 0.27, P = .025), respectively. Participants had excellent VA at 3-month follow-up. Photopic and mesonic pupil diameter negatively correlated with QoV day and QoV night scores, respectively. Pupil diameter was found to have a more significant effect on visual symptoms at night, and lower QoV due to larger pupil size was more noticeable at night. Further investigation is needed to explore the importance of pupil diameter and its impact on the QoV in ICL implanted patients.
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Affiliation(s)
- Qing Zhang
- He Eye Specialist Hospital, Shenyang, China
- The Second Affiliated Hospital of Dalian Medical University, Dalian, China
- Cathedral Eye Clinic, Belfast, UK
| | - Yi Wu
- He Eye Specialist Hospital, Shenyang, China
- The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - He Huang
- He Eye Specialist Hospital, Shenyang, China
| | | | | | | | - Huixin Che
- He Eye Specialist Hospital, Shenyang, China
| | - Ling Xu
- He Eye Specialist Hospital, Shenyang, China
| | | | - Wei He
- He Eye Specialist Hospital, Shenyang, China
| | - Sile Yu
- He Eye Specialist Hospital, Shenyang, China
| | | | - Xingru He
- He Eye Specialist Hospital, Shenyang, China
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Wei Q, Zhou X, Chang W, Jiang R, Zhou X, Yu Z. Retinal and Choroidal Changes Following Implantable Collamer Lens V4c Implantation in High Myopia Patients-A 1-Year Follow-Up Study. Diagnostics (Basel) 2023; 13:3097. [PMID: 37835840 PMCID: PMC10572683 DOI: 10.3390/diagnostics13193097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/25/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
This prospective study aimed to evaluate the impact of Visian Implantable Collamer Lens (ICL) V4c implantation on retinal and choroidal morphology in patients with high myopia. A total of 97 eyes from 52 high myopic patients who underwent ICL V4c implantation were followed up for 12 months. Preoperative and postoperative evaluations included comprehensive ophthalmic assessments and enhanced depth imaging optical coherence tomography (EDI-OCT) to analyze changes in central retinal thickness (CRT), retinal volume (CRV), choroidal thickness (ChT), total choroidal area (TCA), luminal area (LA), and choroidal vascular index (CVI). Repeated measures mixed-effects models were used for comparing pre- and postoperative measurement variables and exploring relationships among age, axial length (AL), spherical equivalent refraction (SER), and postoperative retinal and choroidal changes, with statistical significance set at p < 0.05. Follow-up assessments were conducted at various time points, with participation rates ranging from 21% to 98%. Baseline characteristics showed a median age of 26.7 years, -10.14 diopters of SER, and an AL of 27.44 mm. Throughout the 12-month follow-up, CRT and 3.0 mm CRV consistently increased compared to the baseline, with statistically significant rises observed at postoperative day 1, week 1, and month 12. Most ChT measurements, including subfoveal ChT, declined over the 12 months, except at postoperative 6 months. Horizontal and vertical TCA and LA values significantly increased throughout the follow-up, except for month 6. After surgery, both horizontal and vertical CVI parameters exhibited an increase compared to the baseline, with some changes reaching statistical significance. Correlation analysis performed by repeated measures mixed-effects models showed that no relationship was found between age, AL, and SER and changes in postoperative retinal parameters and CVI parameters. However, postoperative changes in ChT and choroidal area parameters showed a negative correlation with AL and a positive correlation with SER. Our research demonstrated that ICL V4c implantation resulted in noteworthy alterations in retinal and choroidal morphology over a 1-year follow-up period. Moreover, in patients with high myopia, individuals with longer AL and higher degrees of myopia exhibited more pronounced postoperative changes in the choroid and retina. Further studies with extended follow-up durations are necessary to comprehensively understand the long-term effects of ICL implantation on retinal and choroidal morphology and function.
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Affiliation(s)
- Qiaoling Wei
- Department of Ophthalmology, Eye and ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China; (Q.W.); (X.Z.); (W.C.); (R.J.)
- Shanghai Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai 200031, China
- Ocular Trauma Center, Eye and ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
| | - Xianjin Zhou
- Department of Ophthalmology, Eye and ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China; (Q.W.); (X.Z.); (W.C.); (R.J.)
- Department of Ophthalmology, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Weiteng Chang
- Department of Ophthalmology, Eye and ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China; (Q.W.); (X.Z.); (W.C.); (R.J.)
- Shanghai Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai 200031, China
| | - Rui Jiang
- Department of Ophthalmology, Eye and ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China; (Q.W.); (X.Z.); (W.C.); (R.J.)
- Shanghai Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai 200031, China
- Ocular Trauma Center, Eye and ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
| | - Xingtao Zhou
- Department of Ophthalmology, Eye and ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China; (Q.W.); (X.Z.); (W.C.); (R.J.)
- Shanghai Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai 200031, China
| | - Zhiqiang Yu
- Department of Ophthalmology, Eye and ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China; (Q.W.); (X.Z.); (W.C.); (R.J.)
- Shanghai Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai 200031, China
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Tan X, Liu W, Chang Y, Wu W, Yang L, Liu J. Analysis of Inter-Eye Vault Differences After Implantable Collamer Lens (V4c) Implantation. Int J Gen Med 2023; 16:2451-2459. [PMID: 37346811 PMCID: PMC10281286 DOI: 10.2147/ijgm.s384858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/12/2023] [Indexed: 06/23/2023] Open
Abstract
Purpose The safety and stability of implantable collamer lens (ICL) implantation are closely related to the vault. We aimed to assess clinical data from patients with similar anterior segment anatomy who received ICL of the same model placed in the same position and analyze common range and factors affecting the vault inter-eye difference. Patients and Methods A prospective study was performed, including 162 eyes of 81 patients with a bilateral ICL (V4c) implantation. Subjects were evaluated before the surgery and 1 day, 1 week, and 1 month postoperatively, and they were divided into 4 groups based on the ICL size. Bivariate correlation and multiple linear regression (stepwise) analyzed associations between vault inter-eye differences and horizontal sulcus-to-sulcus diameter, anterior chamber depth, lens thickness, ICL size, spherical equivalent, and vault. Results One month after surgery, mean vault inter-eye differences were 74.59 ± 55.59 µm. Nearly 70% of patients presented with vault inter-eye differences lower than 100 µm. The second eye vault variance of 69% was attributed to the first eye vault. Vault inter-eye differences were positively correlated with ICL spherical equivalent (regression equation: vault inter-eye differences (μm) = 139.415 + 6.295 × ICL spherical equivalent). Vaults after ICL implantation were similar in fellow eyes, with some considerable differences. The 95% confidence interval of the vault inter-eye difference was -34.4 ~ 183.6 μm. Conclusion In eyes with similar anterior segment anatomy, there is a 95% probability that the vault will vary from -34.4 μm to -183.6 μm when a similar ICL is implanted. These results can help surgeons to select an appropriate ICL size to achieve an ideal vault. The smaller the spherical equivalent, the larger the difference between the two vaults, which provides a reference for size in moderate myopia. ICL spherical equivalent affects and predicts vault inter-eye differences after ICL implantation.
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Affiliation(s)
- Xin Tan
- Cataract Department, Shanxi Eye Hospital, Taiyuan, Shanxi Province, People’s Republic of China
| | - Wenjie Liu
- Cataract Department, Shanxi Eye Hospital, Taiyuan, Shanxi Province, People’s Republic of China
| | - Ying Chang
- Cataract Department, Shanxi Eye Hospital, Taiyuan, Shanxi Province, People’s Republic of China
| | - Wanmin Wu
- Cataract Department, Shanxi Eye Hospital, Taiyuan, Shanxi Province, People’s Republic of China
| | - Lichun Yang
- Cataract Department, Shanxi Eye Hospital, Taiyuan, Shanxi Province, People’s Republic of China
| | - Jiewei Liu
- Cataract Department, Shanxi Eye Hospital, Taiyuan, Shanxi Province, People’s Republic of China
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Dong J, Yao J, Chang S, Kanclerz P, Khoramnia R, Wang X. Evaluation of Ocular Diameter Parameters Using Swept-Source Optical Coherence Tomography. Medicina (Kaunas) 2023; 59:medicina59050899. [PMID: 37241130 DOI: 10.3390/medicina59050899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/12/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023]
Abstract
Purpose: To investigate the iridocorneal angle-to-angle (ATA), sclera spur-to-sclera spur (STS), and white-to-white (WTW) ocular diameters and their potential influence on anterior chamber intraocular lens (ACIOL) and implantable collamer lens (ICL) sizing in Chinese subjects by using a swept-source optical coherence tomography system (SS-OCT). Design: A retrospective, observational, cross-sectional study. Methods: In 60 right eyes (60 subjects), the ATA, STS, and WTW were measured in six axes (0°-180°, 30°-210°, 60°-240°, 90°-270°, 120°-300°, and 150°-330°) using SS-OCT. The ACIOL and ICL sizes were calculated based on horizontal and vertical axes anterior segment data. A paired sample t-test was used to test the differences in each parameter across the six axes, the potential difference between each pair of parameters in a given axis, and the artificial lens size difference between the horizontal and vertical directions. Pearson's correlation analysis was used to determine the potential correlation between age and AL, WTW, STS, and ATA distances. Results: ATA and STS were the longest on the vertical and shortest on the horizontal axis, while WTW was similar on both axes. These three parameters differed only in the vertical axis (F = 4.910, p = 0.008). ATA and STS were by 0.23 ± 0.08 mm (p = 0.005) and 0.21 ± 0.08 mm wider (p = 0.010) than WTW, respectively. ICL size was 0.27 ± 0.23 mm smaller when based on the horizontal than on the vertical axis parameters (p < 0.001), while ACIOL remained similar (p = 0.709). Age correlated negatively and axial length positively with all measured values. ATA, STS, and WTW correlated positively in the same axis (all p < 0.001). Conclusions: ATA and STS were longer in the vertical than in the horizontal direction, while WTW measurements remained similar. ATA and STS diameters more accurately depicted anatomic relationships for phakic IOL sizing than WTW.
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Affiliation(s)
- Jing Dong
- Department of Ophthalmology, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Jinhan Yao
- Shanxi Eye Hospital Affiliated to Shanxi Medical University, Taiyuan 030002, China
| | - Shuimiao Chang
- Shanxi Eye Hospital Affiliated to Shanxi Medical University, Taiyuan 030002, China
| | - Piotr Kanclerz
- Hygeia Clinic, 80-286 Gdańsk, Poland
- Helsinki Retina Research Group, University of Helsinki, 00014 Helsinki, Finland
| | - Ramin Khoramnia
- The David J. Apple International Laboratory for Ocular Pathology, Department of Ophthalmology, University of Heidelberg, 69120 Heidelberg, Germany
| | - Xiaogang Wang
- Shanxi Eye Hospital Affiliated to Shanxi Medical University, Taiyuan 030002, China
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Nassar GA, Abbas EN, Khalil MMAA, Tharwat E, Mohammed AR. Evaluation of Higher Order Aberrations and Anterior Segment Parameters Changes After Implantable Collamer Lens Implantation for High Myopia. Clin Ophthalmol 2023; 17:1097-1107. [PMID: 37064961 PMCID: PMC10103779 DOI: 10.2147/opth.s405182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/17/2023] [Indexed: 04/18/2023] Open
Abstract
Purpose To evaluate changes in higher order aberrations (HOAs) induced by implantable collamer lens (ICL) implantation in correction of high myopia and to compare the anterior segment parameters before and after surgery. Also, to correlate these parameters with HOAs, the best corrected visual acuity (BCVA) and intraocular pressure (IOP). Methods This prospective interventional cohort case series study included 40 eyes with high myopia that underwent ICL V4c implantation. They were evaluated pre-operatively and post-operatively at 1st and 3rd month HOAs using Scheimpflug Sirius Camera. The anterior segment parameters were evaluated by optical biometry. Correlations between HOAs, BCVA and anterior segment parameters were evaluated. Results The mean pre-operative BCVA was 0.67 ± 0.17, while post-operative BCVA was 0.74 ± 0.16 (p-value < 0.001). The spherical equivalent was -13.66 ± 2.23 pre-operatively, while post-operatively it was -0.77 ± 0.65 (p-value < 0.001). The mean pre-operative root mean square (RMS) of HOAs was 0.62 ± 0.11 µm, while mean post-operative RMS in the 1st month was 0.82 ± 0.29 µm (p-value < 0.001). At 3rd month, it was 0.63 ± 0.17 µm (p-value = 0.685). The mean pre-operative anterior chamber depth (ACD) was 3.66 ± 0.26 mm. It decreased in the post-operative 1st month to 3.46 ± 0.30 mm, while in 3rd month 3.45 ± 0.24 mm (p-value < 0.001, < 0.001) respectively. The mean pre-operative anterior chamber angle (ACA) 45.98 ± 8.39 o while, the mean ACA was 31.65 ± 4.14, 31.03 ± 3.74 post-operatively (p-value < 0.001, < 0.001) respectively. There was significant increase in IOP (p-value < 0.001). Conclusion ICL implantation is safe and effective in correction of high myopia, as HOAs increase at first month post-operatively then, return to the pre-operative level by 3rd month. However, anterior segment parameters show significant changes which may need longer follow up.
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Affiliation(s)
- Ghada A Nassar
- Department of Ophthalmology, Faculty of Medicine, Cairo University, Cairo, Egypt
- Correspondence: Ghada A Nassar, 10 Said Street, Heliopolis, Cairo, 11757, Egypt, Tel +2 01222397300, Fax +20223636504, Email
| | - Ezzat N Abbas
- Department of Ophthalmology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | | | - Ehab Tharwat
- Department of Ophthalmology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Ahmed R Mohammed
- Department of Ophthalmology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
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Li HY, Ye Z, Li ZH. Postoperative efficacy, safety, predictability, and visual quality of implantable collamer lens implantation versus small incision lenticule extraction in myopic eyes: a Meta-analysis. Int J Ophthalmol 2023; 16:442-452. [PMID: 36935780 PMCID: PMC10009601 DOI: 10.18240/ijo.2023.03.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 01/04/2023] [Indexed: 03/06/2023] Open
Abstract
AIM To compare the postoperative efficacy, safety, predictability, and visual quality of implantable collamer lens (ICL) implantation versus small incision lenticule extraction (SMILE) in myopia eyes. METHODS PubMed, EMBASE, Web of Science, Cochrane Library and several Chinese databases were searched at May 2021 to select relevant studies in comparison of clinical outcomes between ICL implantation and SMILE for myopia. The primary outcomes were efficacy, safety, and predictability. And the secondary outcomes were postoperative higher-order ocular aberrations (HOAs), modulation transfer function cutoff frequency (MTF), objective scatter index (OSI), contrast sensitivity and a quality of vision (QoV) questionnaire. RESULTS A total of 1036 eyes from 10 studies, of which 503 eyes underwent ICL implantation and 533 eyes underwent SMILE, were enrolled in this Meta-analysis. Pooled results revealed that ICL group had a better safety index and post-corrected distance visual acuity (CDVA) (P=0.007, <0.00001, respectively), and a lower percentage of eyes with a postoperative CDVA lost 1 line (P=0.007) than the SMILE group. No significant differences were found in comparison of the other primary outcomes. In the long-term follow-up (>6mo), ICL group had a lower total HOA, coma, and spherical aberration than SMILE group (P=0.003, <0.00001, 0.04). Yet higher trefoil was found in ICL group at 6mo after surgery (P=0.003). Additionally, ICL group also had a higher MTF value (P=0.02), and a higher contrast sensitivity score for spatial frequencies of 1.5, 6, and 12 cpds (P=0.02, 0.005, 0.02, respectively). And it also had a lower score of bothersome in QoV questionnaire than SMILE group (P=0.003). CONCLUSION ICL implantation and SMILE have similar and comparable outcomes in term of the efficacy and predictability for correcting high myopia. However, ICL group is relatively safer and also has better visual quality in comparison of SMILE group.
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Affiliation(s)
- Hong-Yu Li
- Medical School of Chinese PLA, Beijing 100853, China
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing 100853, China
| | - Zi Ye
- Medical School of Chinese PLA, Beijing 100853, China
| | - Zhao-Hui Li
- Medical School of Chinese PLA, Beijing 100853, China
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing 100853, China
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Jiang Y, Luo Y, Li Y, Lu T. The long-term observation of the rotation of implantable collamer lens as the management of high postoperative vault. Front Med (Lausanne) 2023; 10:1104047. [PMID: 36910497 PMCID: PMC9995363 DOI: 10.3389/fmed.2023.1104047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 02/02/2023] [Indexed: 02/25/2023] Open
Abstract
Purpose This study aimed to describe the effectiveness and stability of implantable collamer lens (ICL) rotation in reducing high postoperative vault. Setting This study was conducted in the Peking Union Medical College Hospital, Chinese Academy of Medical Sciences. Design This is a retrospective case series. Methods Twenty-two eyes from 22 patients who had ICL (V4c EVO) implantation with high postoperative vault (>=750 μm) were recruited for our study. All the lenses were rotated from a horizontal to an oblique position. The vault, SSA, AOD500, AOD750, TISA500, and TISA750 at 180° and 0° were measured pre-rotation, 1-week post-rotation, and in the at-least 1-year-follow-up. Results Twenty female patients and two male patients were recruited, with a mean age of 28.68 ± 6.08 years. The mean vault had declined significantly from 951.81 ± 154.26 μm pre-rotation to 772.27 ± 119.40 μm 1 week post-rotation (p < 0.001). The SSA, AOD500, AOD750, TISA500, and TISA750 at 180° and 0° pre-rotation and 1-week post-rotation were 30.40 ± 7.91° and 45.14 ± 6.75°, 32.37 ± 7.48° and 46.23 ± 6.39°, 303.27 ± 87.99 and 522.45 ± 122.16 μm, 323.81 ± 89.15 and 536.13 ± 121.66 μm, 387.95 ± 99.43 and 630.81 ± 133.59 μm, 435.68 ± 106.72 and 643.36 ± 132.82 μm, 0.109 ± 0.034 and 0.202 ± 0.053 mm2, 0.123 ± 0.034 and 0.212 ± 0.051 mm2, 0.194 ± 0.056 and 0.345 ± 0.083 mm2, and 0.216 ± 0.055 and 0.358 ± 0.079 mm2 (all p < 0.001). The mean vault value had changed from 747.50 ± 116.07 μm 1-week post-rotation to 586.87 ± 132.65 μm in the 1-year follow-up. However, the SSA, AOD500, AOD750, TISA500, and TISA750 at 180° and 0° had remained stable (p > 0.05). Conclusion Non-toric ICL rotation is a novel and effective technique in the treatment of high postoperative vault. Our results are more robust given the extended period of follow-up.
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Affiliation(s)
- Yang Jiang
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Yan Luo
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Ying Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Thomas Lu
- School of Medicine, University of New South Wales, Kensington, NSW, Australia
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Wu H, Zhong DJ, Luo DQ, Zhang LY, Liu J, Wang H. Improvement in the ideal range of vault after implantable collamer lens implantation: a new vault prediction formula. Front Med (Lausanne) 2023; 10:1132102. [PMID: 37181381 PMCID: PMC10174235 DOI: 10.3389/fmed.2023.1132102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 04/06/2023] [Indexed: 05/16/2023] Open
Abstract
Background To derive and validate a novel vault prediction formula to improve the predictability and safety of implantable collamer lens (ICL) implantation. Methods Thirty-five patients (61 eyes) with previous posterior chamber intraocular lens implantation were included. Various parameters, such as horizontal-visible iris diameter (HVID), photopic pupil diameter (PPD), axial length (AL), white-to-white (WTW), anterior chamber width (ACW), angle-to-angle (ATA), crystalline lens rise (CLR), anterior chamber depth (ACD), horizontal sulcus-to-sulcus (HSTS), and ciliary sulcus angle (CSA) were measured. Vault was measured at 3 months after surgery using CASIA2 anterior segment optical coherence tomography. The formula was derived using multiple linear regression analysis and named as WH formula. It was validated in 65 patients (118 eyes) to determine the percentage of the ideal postoperative vault range and to compare the differences between the WH formula and the NK, KS, and STAAR formulas. Results Final ICL size, ATA, CSA, and CLR were included in the prediction formula model (adjusted R2 = 0.67, p < 0.001). The achieved vault 1 month after the surgery was 556.19 μm ± 166.98 μm in the validation group, and the ideal vault range was 200-800 μm (92%). The difference between the achieved vault and that predicted using the WH formula was not statistically significant (p = 0.165), whereas the difference between the achieved vault and that predicted using the NK and KS formulas was statistically significant (p < 0.001 and p < 0.001, respectively). The 95% agreement limit range of the achieved vault and the vault predicted using the WH formula was narrower than those predicted using the NK and KS formulas (-295.20-258.82 μm). Conclusion This study combined the results of optical coherence tomography and ultrasound biomicroscopy measurements of the anterior segment of the eye and incorporated ciliary sulcus morphology quantification into the prediction formula. The study derived a prediction formula for vault by combining ICL size, ATA, and CLR. The derived formula was found to be superior to the currently available formulas.
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Zaldivar R, Zaldivar R, Gordillo CH, Adamek P. Visual Acuity Improvement in Low, Moderate and High Myopia After Posterior-Chamber Phakic Implantable Collamer Lens Surgery in a Large Patient Cohort. Clin Ophthalmol 2023; 17:1179-1185. [PMID: 37096208 PMCID: PMC10122501 DOI: 10.2147/opth.s407492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/11/2023] [Indexed: 04/26/2023] Open
Abstract
Purpose To compare best-corrected visual acuity (BCVA) before and after implantable collamer lens (ICL) surgery in patients with low, moderate and high myopia. Methods A single-centre, prospective, registry-based study involving patients with myopia who received ICLs between October 2018 and August 2020. The study population was divided into three groups of subjects with low (from 0 to -6 D), moderate (-6 to -10 D) and high myopia (more than -10 D). We analysed uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), spherical equivalent (SE), differences between BCVA pre- and 1-month postoperative, and line gain in BCVA 1 month after surgery. Results A total of 770 eyes belonging to 473 patients were surgically intervened during the study period, of which 692 eyes completed 1 month of postoperative follow-up and were included in the study population. At 1-month follow-up, 478 eyes (69%) achieved a BCVA of 20/20, 599 (87%) obtained 20/25 or better, and 663 (96%) had a BCVA of 20/40 or better. We identified a significant improvement in BCVA (baseline 0.15±0.2 logMAR vs follow-up 0.07±0.2 logMAR, p<0.0001) and a significant reduction in SE (baseline -9.23±4.1 D, vs follow-up -0.21±0.8 D, p<0.0001), with a significant relationship between preoperative SE and line gain (r = -0.46, p<0.0001). We identified a significantly higher line gain among eyes with higher degrees of myopia (low myopia 0.22±0.69 lines compared to moderate myopia 0.56±1.1 lines and high myopia 1.51±1.9 lines, p<0.0001). Notably, 99.6% of eyes with a high grade of myopia achieved improvement to a low degree (less than -6 D) at follow-up. The safety and efficacy indexes were 0.083±0.1 and -0.001±0.1, respectively. Conclusion In this large patient cohort, ICL surgery was related to a significant line gain in BCVA, particularly among eyes with higher degrees of myopia.
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Affiliation(s)
- Roger Zaldivar
- Surgery Department, Instituto Zaldivar, Mendoza, Argentina
- Correspondence: Roger Zaldivar, Instituto Zaldivar, Av. Emilio Civit 701, Mendoza, Argentina, Email
| | | | | | - Pablo Adamek
- Surgery Department, Instituto Zaldivar, Mendoza, Argentina
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Feldhaus L, Mayer WJ, Dirisamer M, Kassumeh S, Shajari M, Priglinger SG, Luft N. Comparison of Visual and Refractive Outcome between Two Methods of Corneal Marking for Toric Implantable Collamer Lenses (TICL) in Phakic Eyes. Curr Eye Res 2022; 48:357-364. [PMID: 36524538 DOI: 10.1080/02713683.2022.2159981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE To compare the efficacy of digital-assisted reference marking for toric implantable collamer lenses (Callisto Eye System) with manual marking technique using a slit lamp markeur. METHODS This study included patients that underwent implantation of a toric implantable collamer lens (EVO Visian toric ICL, Staar Surgical). Patients were included if they had a myopia above -3 diopters (D) and regular corneal astigmatism of 0.75 diopters or higher. Between both groups a 1:2 matching regarding similar preoperative level of myopia and astigmatism was performed. Visual and refractive outcomes were evaluated. Vector analysis was performed to evaluate total astigmatic changes. RESULTS This study comprised 57 eyes of 57 patients with 19 eyes in the digital group and 38 eyes in the manual marking group. Postoperatively there were no statistically significant differences between both groups in UDVA (p = 0.467), spherical equivalent (SE) (p = 0.864), sphere (p = 0.761) and cylinder (p = 0.878). Vector analysis showed a slightly more accurate postoperative refractive astigmatism in the manual group (0.26 D at 107° ± 0.50 D) compared to the digital marking group (0.31 D at 107° ± 0.45 D), nevertheless with no statistically significant differences between both groups. CONCLUSIONS A digital tracking approach for toric ICL alignment was an efficient and safe method for toric marking with similar results regarding visual and refractive outcomes compared to a conventional corneal marking method. Nevertheless, image-guided surgery helped to streamline the workflow in refractive ICL surgery.
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Affiliation(s)
- Lukas Feldhaus
- Department of Ophthalmology, University Hospital, LMU Munich, Munich, Germany
| | - Wolfgang J Mayer
- Department of Ophthalmology, University Hospital, LMU Munich, Munich, Germany
| | - Martin Dirisamer
- Department of Ophthalmology, University Hospital, LMU Munich, Munich, Germany
| | - Stefan Kassumeh
- Department of Ophthalmology, University Hospital, LMU Munich, Munich, Germany
| | - Mehdi Shajari
- Department of Ophthalmology, University Hospital, LMU Munich, Munich, Germany
| | | | - Nikolaus Luft
- Department of Ophthalmology, University Hospital, LMU Munich, Munich, Germany
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Abstract
Purpose To evaluate the safety and effectiveness of collamer posterior chamber phakic refractive lenses with a central port design (EVO and EVO+ Sphere and Toric implantable collamer lenses [ICLs]) for correction of moderate myopia with or without astigmatism. Patients and Methods Six-month results of a multicenter clinical trial were performed under United States FDA Investigational Device Exemption. Subjects 21 through 45 years of age with manifest refraction spherical equivalent ranging from -3.00 D to -6.00 D and astigmatism up to 4.00 D underwent implantation of EVO or EVO+ Sphere or Toric ICLs. Uncorrected (UDVA) and corrected (CDVA) distance visual acuities, manifest refraction, intraocular pressure (IOP), endothelial cell density, and adverse events were evaluated over 6 months. Results This report includes a retrospective review of 200 eyes of 114 subjects with mean age 35.1 ± 5.1 years that completed the 6-month visit. Mean preoperative spherical equivalent (SE) measured -4.61 ± 0.87 D (range: -3.00 to -6.00 D). At 6 months, mean SE was -0.085 ± 0.26 D, with 91.5% within ± 0.50 D of target and 100.0% within ±1.00 D of target. Mean postoperative UDVA and CDVA were -0.065 ± 0.08 logMAR and -0.14 ± 0.07 logMAR, respectively. About 98.0% of eyes maintained or gained lines of CDVA, and no eye lost more than 1 line CDVA. Efficacy and safety indices were 1.03 and 1.21, respectively. No eye experienced pupillary block, required preoperative or postoperative peripheral iridotomy or iridectomy, developed anterior subcapsular cataract or had elevated IOP due to angle narrowing or pigment dispersion. Mean endothelial cell density declined by 2.2%. Conclusion EVO ICL lenses demonstrated accuracy, predictability and stability of refractive correction with achievement of high levels of UDVA and an excellent safety profile for patients with moderate myopia with or without astigmatism.
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Affiliation(s)
- Mark Packer
- Packer Research Associates, Boulder, CO, USA,Correspondence: Mark Packer, Packer Research Associates, 1400 Bluebell Ave, Boulder, CO, 80302, USA, Tel +1 541 915 – 0291, Email
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18
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Zaldivar R, Zaldivar R, Adamek P, Quintero G, Cerviño A. Descriptive Analysis of Footplate Position After Myopic Implantable Collamer Lens Implantation Using a Very High-Frequency Ultrasound Robotic Scanner. Clin Ophthalmol 2022; 16:3993-4001. [PMID: 36504639 PMCID: PMC9733561 DOI: 10.2147/opth.s393223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 11/17/2022] [Indexed: 12/07/2022] Open
Abstract
Purpose To assess the position of the haptics of the implantable collamer lens (ICL) in myopic eyes using a high-frequency ultrasound robotic scanner. Methods This was a prospective, single-arm, observational study carried out at the Instituto Zaldivar SA (Mendoza, Argentina) in a sample of 52 eyes who have been submitted to successful ICL implantation prior to enrollment. Images of the eyes were obtained using a very-high frequency digital ultrasound robotic scanner (VHFDU) to establish the position of the ICL in the posterior chamber and its relation to the ciliary sulcus. New parameters for lens position analysis were also described. Results In 81% of cases (42 eyes), the ICL rests on the ciliary body (CB) in both temporal and nasal sides, being slightly lower than 6% (3 eyes) those that rest on the sulcus in both sides, with significant correlations between ICL position and vault values (p<0.05). Cases in which the ICL position was CB-CB yielded central vault values across the whole range determined within the sample, but most of the eyes where the ICL rests on both the sulcus in one side and the CB in the other yield greater central vault values. Correlation was significant between ICL position and retroposition distance on the temporal side (Spearman's rho -0.487, p<0.001). A significant but weaker correlation was also found between ICL position and retroiridian space (p<0.05). Conclusion ICL for myopia footplates tend to locate outside of the sulcus in a significant percentage of patients after successful implantation. VHFDU assessment in eyes implanted with an ICL to properly study the lens footplate position and posterior anatomical relations provides important additional information besides post-surgery vault.
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Affiliation(s)
| | | | | | | | - Alejandro Cerviño
- Department of Optics & Optometry & Vision Sciences, University of Valencia, Valencia, Spain,Correspondence: Alejandro Cerviño, Department of Optics & Optometry & Vision Science, University of Valencia, C / Dr. Moliner, 50. Burjassot, Valencia, 46100, Spain, Tel +34 963 544 852, Email
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Moshirfar M, Fuhriman DA, Ali A, Odayar V, Ronquillo YC, Hoopes PC. Inflammatory Bowel Disease Guidelines for Corneal Refractive Surgery Evaluation. J Clin Med 2022; 11:jcm11164861. [PMID: 36013100 PMCID: PMC9409909 DOI: 10.3390/jcm11164861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/14/2022] [Accepted: 08/16/2022] [Indexed: 11/16/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic systemic inflammatory condition that can potentially adversely affect surgical outcomes in patients receiving elective ophthalmic procedures. In this case series, 21 eyes of 11 patients with ulcerative colitis or Crohn’s disease underwent laser in situ keratomileusis (LASIK), photorefractive keratectomy (PRK), or small incision lenticule extraction (SMILE). Their surgical outcomes were followed up for an average of 8.9 ± 4.6 months. All the patients in this study did well, with 100% of eyes corrected for distance vision achieving uncorrected distance visual acuity 20/20 by postoperative month three. Common symptoms noted during the postoperative period included dry eyes, irritation, foreign body sensation, and blurry vision, all of which improved in prevalence and severity over the follow-up period, and none of the patients experienced a flare-up of their disease. Despite the successful outcomes in these patients, the authors recognize the inherent risks of operating on patients with IBD. Currently, there are no consensus guidelines for clinicians to follow to ensure that they are adequately screening these patients for eligibility, so the authors are suggesting a relevant, focused review of systems, a brief IBD history-related questionnaire, and a preliminary surgical decision-making flowchart for use in surgical evaluation.
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Affiliation(s)
- Majid Moshirfar
- Hoopes Vision Research Center, Hoopes Vision, 11820 S. State St., Ste. 200, Draper, UT 84020, USA
- John A. Moran Eye Center, University of Utah School of Medicine, Salt Lake City, UT 84132-2101, USA
- Utah Lions Eye Bank, Murray, UT 84107, USA
- Correspondence: ; Tel./Fax: +1-801-568-0200
| | - David A. Fuhriman
- McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Amir Ali
- John Sealy School of Medicine, The University of Texas Medical Branch at Galveston, Galveston, TX 77555, USA
| | - Varshini Odayar
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA
| | - Yasmyne C. Ronquillo
- Hoopes Vision Research Center, Hoopes Vision, 11820 S. State St., Ste. 200, Draper, UT 84020, USA
| | - Phillip C. Hoopes
- Hoopes Vision Research Center, Hoopes Vision, 11820 S. State St., Ste. 200, Draper, UT 84020, USA
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Reinstein DZ, Vida RS, Archer TJ. Visual Outcomes, Footplate Position and Vault Achieved with the Visian Implantable Collamer Lens for Myopic Astigmatism. Clin Ophthalmol 2021; 15:4485-4497. [PMID: 34848942 PMCID: PMC8612663 DOI: 10.2147/opth.s330879] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/01/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Report the outcomes of the implantable collamer lens (ICL) in myopic astigmatism using very high-frequency (VHF) digital ultrasound sizing. Methods Analysis of 42 consecutive ICL procedures using EVO and EVO+ (Visian V4c) lenses (STAAR Surgical) was done. ICL size was chosen using the ultrasound-based Kojima Formula with Insight 100 VHF digital ultrasound (VHFDU). Standard visual outcomes analysis was performed using 3-month data, also including contrast sensitivity, refractive and corneal vector analysis, and ECC. Postoperative lens position was evaluated using VHF digital ultrasound. Results Attempted SEQ was −10.83±3.39D (−4.40 to −16.98D). Cylinder was −1.46±1.15D (0.00 to −4.25D). One-year follow-up was available in 86% of the eyes and 3 months in 96%. Postoperative UDVA was 20/20 or better in 89% of the eyes, relative to 71% preoperatively. Postoperative SEQ refraction was ±0.50 D in 74% and ±1.00 D in 98% of the eyes. There was a gain of one line of CDVA in 43% of the eyes, 2 or more lines in 10% of the eyes, while there was a one line loss in 7% and no eyes lost 2 or more lines. The vector mean for the corneal SIA was 0.24 D Ax 100. Contrast sensitivity showed a statistically significant increase with a mean of 0.14 log units at 6, 12, and 18 cycles per degree (P<0.01). The mean change in ECC was −153±353 cells/mm2. Lens vault was 506±233 µm (114–924 µm). Footplate insertion was in zonular position in 48.3%, ciliary body in 49.2%, and sulcus in 2.5% of locations. Conclusion ICL implantation resulted in high safety and efficacy but with an implantation vault range that ideally would be improved upon. VHF digital ultrasound of the lens footplate and posterior anatomical relations may provide essential information for evaluating postoperative vault outliers.
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Affiliation(s)
- Dan Z Reinstein
- London Vision Clinic, London, UK.,Columbia University Medical Center, New York, NY, USA.,Sorbonne Université, Paris, France.,Biomedical Science Research Institute, Ulster University, Coleraine, UK
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21
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Alhamzah A, Alharbi SS, Alfardan F, Aldebasi T, Almudhaiyan T. Indications for exchange or explantation of phakic implantable collamer lens with central port in patients with and without keratoconus. Int J Ophthalmol 2021; 14:1714-1720. [PMID: 34804861 DOI: 10.18240/ijo.2021.11.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 06/16/2021] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate the causes of phakic implantable collamer lens (ICL) exchange/explantation in patients with and without keratoconus (KC) at two tertiary hospitals in Riyadh, Saudi Arabia. METHODS A retrospective chart review of all patients who underwent ICL (model V4c with central port) exchange/explantation was performed using the electronic medical record systems. All available preoperative and postoperative data were documented for each patient. RESULTS Over 7y, 2283 ICL implantation procedures were performed; 46 implants (2%) required exchange (21 implants)/explantation (25 implants), of which 14 cases (30.4%) were patients with KC. Indications for ICL exchange/explantation in non-KC group were vault measurement, cataract formation, increased intraocular pressure, inaccurate refraction, and patient dissatisfaction in 22 (68.75%), 4 (12.5%), 3 (9.37%), 2 (6.25%), and 1 (3.12%) case, respectively. The most common indication for ICL exchange/explantation in the KC group was inaccurate vault sizing in 11 patients (78.57%), inaccurate refraction in 2 patients (14.28%), and patient dissatisfaction postoperatively in 1 (7.14%) case. CONCLUSION ICL implantation results in predictable refractive outcomes over the long term with exchange/explantation rates comparable to previous literature. Improper vault size is the most common cause of ICL exchange/explantation among patients with or without KC.
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Affiliation(s)
- Albanderi Alhamzah
- King Saud bin Abdulaziz University for Health Sciences, College of Medicine, Riyadh 22490, Saudi Arabia
| | - Saad S Alharbi
- Anerior Segment Department, King Khaled Eye Specialist Hospital, Riyadh 7191, Saudi Arabia
| | - Fahad Alfardan
- Department of Surgery, Division of Ophthalmology, National Guard Hospital, Riyadh 22490, Saudi Arabia.,King Abdullah International Medical Research Center, Riyadh 22490, Saudi Arabia
| | - Tariq Aldebasi
- Department of Surgery, Division of Ophthalmology, National Guard Hospital, Riyadh 22490, Saudi Arabia
| | - Tariq Almudhaiyan
- Department of Surgery, Division of Ophthalmology, National Guard Hospital, Riyadh 22490, Saudi Arabia.,King Abdullah International Medical Research Center, Riyadh 22490, Saudi Arabia
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22
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Zhao J, Zhao J, Yang W, Li M, Hao G, Chen Z, Wang X, Yao P, Zhou X. Consecutive contralateral comparison of toric and non-toric implantable collamer lenses V4c in vault after implantation for myopia and astigmatism. Acta Ophthalmol 2021; 99:e852-e859. [PMID: 33369209 DOI: 10.1111/aos.14720] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/18/2020] [Accepted: 11/21/2020] [Indexed: 11/30/2022]
Abstract
AIMS To compare the vault performance between implantable collamer lens (ICL) V4c and Toric ICL (TICL) V4c after implantation and to investigate the affecting factors. METHODS Sixty-eight eyes from 34 patients with myopia or myopia astigmatism who underwent implantation of TICL in one eye (group A) and identically sized ICL (group B) in the contralateral eye were included. Mean follow-up time were 7.58 ± 1.63 months (range: 6-10 months). Vault was compared between the two groups and correlations between vault and age, preoperative ocular biometric measurements were analysed. Generalized estimating equation (GEE) model of postoperative vault adjusting for within-patient intereye correlations was performed. RESULTS The safety indices were 1.27 and 1.35, and the efficacy indices were 1.20 and 1.24 for groups A and B, respectively. Vault of TICL was significantly higher than that of ICL (554.11 ± 219.36 μm vs 449.70 ± 172.47 μm, P < 0.001). The difference between ICL/TICL size and WTW (size-WTW) and STS (size-STS), anterior chamber depth and pupil diameter (PD) were positively correlated with vault. Patient age and clear lens rise measured by Pentacam were negatively correlated with vault. Results of GEE model showed preoperative PD, age, cylindrical power of TICL and size-WTW were influencing factors for postoperative vault. CONCLUSIONS Vault after TICL implantation is higher than that with ICL. PD, age, cylindrical power of TICL and size-WTW could affect postoperative vault.
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Affiliation(s)
- Jiao Zhao
- Department of Ophthalmology People’s Hospital of Leshan Leshan China
| | - Jing Zhao
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
| | - Wen Yang
- Department of Ophthalmology The Third People’s Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Meiyan Li
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
| | - Gengsheng Hao
- Department of Ophthalmology People’s Hospital of Leshan Leshan China
| | - Zhuoyi Chen
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
| | - Xiaoying Wang
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
| | - Peijun Yao
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
| | - Xingtao Zhou
- Eye Institute and Department of Ophthalmology Eye & ENT Hospital Fudan University Shanghai China
- NHC Key Laboratory of Myopia (Fudan University) Key Laboratory of Myopia Chinese Academy of Medical Sciences Shanghai China
- Shanghai Research Center of Ophthalmology and Optometry Shanghai China
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23
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Montés‐Micó R, Ruiz‐Mesa R, Rodríguez‐Prats JL, Tañá‐Rivero P. Posterior-chamber phakic implantable collamer lenses with a central port: a review. Acta Ophthalmol 2021; 99:e288-e301. [PMID: 32841517 PMCID: PMC8246543 DOI: 10.1111/aos.14599] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 07/26/2020] [Indexed: 02/06/2023]
Abstract
We aimed to summarize the outcomes reported following the implantation of the V4c implantable collamer lens with a central port (ICL, STAAR Surgical Inc) for myopia correction. A literature search in PubMed, Web of Science and Scopus was carried out to identify publications reporting clinical outcomes of patients who were implanted with the V4c ICL model and had a follow‐up period of at least 6 months. A total of 35 clinical studies published between 2012 and 2020 were included in the present review. A comprehensive analysis of the available data was performed, focusing on visual and refractive outcomes at different time‐points post‐surgery. In addition, adverse events and other parameters such as endothelial cell density, intraocular pressure and vault measurements—which were evaluated in some of the studies—were also compared. This review encompassed a total of 2904 eyes. The outcomes reported in this review lead us to conclude that ICL V4c implantation for myopia correction is a safe and efficient procedure, with stable visual and refractive outcomes and low adverse event rates. The patient’s anterior segment should be thoroughly characterized, and the ICL parameters should be carefully selected so as to achieve good outcomes and avoid complications.
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Affiliation(s)
- Robert Montés‐Micó
- Oftalvist Alicante Spain
- Optics and Optometry and Vision Sciences Department University of Valencia Valencia Spain
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24
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Pinto C, Monteiro T, Franqueira N, Faria-Correia F, Mendes J, Vaz F. Posterior chamber collamer phakic intraocular lens implantation: Comparison of efficacy and safety for low and moderate-to-high myopia. Eur J Ophthalmol 2021; 32:11206721211012861. [PMID: 33887990 DOI: 10.1177/11206721211012861] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To compare visual, refractive and safety outcomes of central-hole posterior chamber collamer phakic intraocular lens implantation for low and moderate-to-high myopia. SUBJECTS/METHODS This retrospective cohort study included 338 eyes submitted to posterior chamber collamer phakic intraocular lens implantation that completed a 12-month postoperative follow-up. Two groups were defined depending on preoperative spherical equivalent: group 1 comprised 106 eyes with manifest spherical equivalent of -6.00 D or less; group 2 comprised 232 eyes with manifest spherical equivalent higher than -6.00 D. Effectiveness, predictability, stability and safety outcomes were compared preoperatively and at 1, 6 and 12 months postoperatively. RESULTS At 1-year postoperative, uncorrected and corrected visual acuities were 0.02 ± 0.17 and -0.01 ± 0.12 logMAR (group 1) and 0.04 ± 0.20 and 0.01 ± 0.16 logMAR (group 2), with an efficacy index of 1.05 ± 0.17 and 1.17 ± 0.28. Respectively, 92 (86.8%) and 199 (85.8%) eyes were within ±0.50 D of targeted refraction, and postoperative manifest refraction changes were -0.07 ± 0.25 D and -0.07 ± 0.35 D. Intraocular pressure did not change significantly. The mean rate of endothelial cell loss was 1.12% and 1.10%, respectively. One case of anterior subcapsular cataract (group 2) was observed. ICL exchange occurred in one case (group 1) and three cases (group 2). No vision-threatening complications were reported. CONCLUSION The posterior chamber collamer phakic intraocular lens implantation demonstrated high visual and refractive efficacy with an excellent safety profile for the correction of both low and moderate-to-high myopia, revealing equivalent 1-year outcomes regardless of the degree of preoperative myopia.
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Affiliation(s)
| | - Tiago Monteiro
- Department of Ophthalmology, Hospital de Braga, Braga, Portugal
- Life and Health Sciences Research Institute (ICVS), Escola de Medicina, Universidade do Minho, Braga, Portugal
| | - Nuno Franqueira
- Department of Ophthalmology, Hospital de Braga, Braga, Portugal
| | - Fernando Faria-Correia
- Department of Ophthalmology, Hospital de Braga, Braga, Portugal
- Life and Health Sciences Research Institute (ICVS), Escola de Medicina, Universidade do Minho, Braga, Portugal
| | - José Mendes
- Department of Ophthalmology, Hospital de Braga, Braga, Portugal
- Life and Health Sciences Research Institute (ICVS), Escola de Medicina, Universidade do Minho, Braga, Portugal
| | - Fernando Vaz
- Department of Ophthalmology, Hospital de Braga, Braga, Portugal
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25
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Jabbour S, Bower KS. Three-Year Outcomes of Implantable Collamer Lens Followed by Excimer Laser Enhancement ("Bioptics") in the Treatment of High Myopic Astigmatism. Clin Ophthalmol 2021; 15:635-643. [PMID: 33623364 PMCID: PMC7896759 DOI: 10.2147/opth.s283888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 01/18/2021] [Indexed: 11/29/2022] Open
Abstract
Purpose Describe three-year outcomes of spherical implantable Collamer lens (ICL) followed by excimer laser enhancement (bioptics) in eyes with high myopic astigmatism. Patients and Methods Retrospective case series of thirty-four cases that underwent bioptics enhancement at the Johns Hopkins Wilmer Eye Institute. All eyes had a preoperative sphere of −6.00 D or more with a cylinder of at least 2.00 D. Uncorrected and corrected distance visual acuity (UDVA and CDVA), manifest spherical equivalent refraction (MSE), ICL vault measurements and central corneal thickness (CCT) were collected. Endothelial cell counts (ECC), root mean square (RMS) of higher order aberrations (HOAs), adverse events and subsequent surgeries were also assessed. Results All patients had a minimum follow-up of 3 years. Preoperative UDVA was 2.29 ± 0.46 logMAR and improved to 0.03 ± 0.23 logMAR at 3 years (p<0.05). MSE was −12.30 ± 4.05 preoperatively and changed to −0.21 ± 0.46 at 3 years (p<0.05). The efficacy and safety indices were 1.28 ± 0.32 and 1.47 ± 0.27 at 3 years post-enhancement. HOA did not significantly change throughout the follow-up (p<0.05). Endothelial cell loss at 12 months was calculated at 5.7%. Two eyes required ICL exchange due to vault-related issues. Conclusion Bioptics offered excellent long-term safe, predictable, and efficient outcomes for high myopic astigmatism and can be considered an option if toric ICL is not available. Results confirm that wavefront-guided photoablation remains an excellent option to manage residual refractive error after phakic IOL.
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Affiliation(s)
- Samir Jabbour
- The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kraig S Bower
- The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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26
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Chen Q, Qi MY, Lei XH, Zeng QY. Clinical observations of iridociliary cysts and their changes after implantable collamer lens implantation in myopic patients. Int J Ophthalmol 2020; 13:965-969. [PMID: 32566510 DOI: 10.18240/ijo.2020.06.17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 11/21/2019] [Indexed: 11/23/2022] Open
Abstract
AIM To observe the characteristics of iridociliary cysts in myopic patients and evaluate the influences on the position and safety of implantable collamer lens (ICL) after surgery. METHODS Totally 270 eyes of 135 patients who underwent ICL surgery for the corrections of myopia were included in this study. Preoperative and postoperative morphology of iridociliary cysts were observed in ultrasonic biomicroscopy (UBM) image. RESULTS A total of 138 iridociliary cysts were found in 88 eyes of 50 patients among 270 eyes of 135 patients before surgery (37%). Twenty-five patients had cysts in one eye (50%) and 25 had cysts in both eyes (50%). The prevalence of iridociliary cysts was negatively correlated with age, but no gender difference (P>0.05). The incidence of iridociliary cysts was much less in eyes with myopia greater than -9.00 D (P<0.05). The diameter of the largest cyst was 1.96 mm and the smallest cyst was 0.24 mm, with a majority within the range of 0.5 to 1.0 mm. Most of the cysts were located in the inferior temporal quadrant. One year after ICL implantation, 51 iridociliary cysts (37%) remained unchanged, 47 cysts (34%) decreased in size, and 40 cysts (29%) disappeared. Most of cysts that changed after surgery were smaller than 1.0 mm (P<0.05) and located in the nasal and temporal sides around the haptics of implantable lens. All the ICL were in their original position. CONCLUSION Iridociliary cysts are commonly seen in myopic eyes. The cysts have no impact on the safety of ICL surgery. Some cysts may decrease in size or disappear after ICL implantation.
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Affiliation(s)
- Qian Chen
- Aier Eye Hospital of Wuhan University, Wuhan 430000, Hubei Province, China.,Hankou Aier Eye Hospital, Wuhan 430000, Hubei Province, China
| | - Meng-Ying Qi
- Aier Eye Hospital of Wuhan University, Wuhan 430000, Hubei Province, China.,Hankou Aier Eye Hospital, Wuhan 430000, Hubei Province, China
| | - Xiao-Hua Lei
- Aier Eye Hospital of Wuhan University, Wuhan 430000, Hubei Province, China.,Hankou Aier Eye Hospital, Wuhan 430000, Hubei Province, China
| | - Qing-Yan Zeng
- Aier Eye Hospital of Wuhan University, Wuhan 430000, Hubei Province, China.,Hankou Aier Eye Hospital, Wuhan 430000, Hubei Province, China
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27
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Abstract
To compare the safety of implantable Collamer lens (ICL) implantation with and without ophthalmic viscosurgical device (OVD).A total of 148 eyes underwent a conventional ICL implantation with OVD (OVD group), and 112 eyes underwent a modified ICL implantation without OVD (OVD-free group). The balanced salt solution was used to load ICL and maintain the anterior chamber in the OVD-free group. The surgical time, postoperative uncorrected distance visual acuity, intraocular pressure, endothelial cell density (ECD), and percentage of hexagonal cells were compared between the OVD and the OVD-free groups.No significant differences were detected in uncorrected distance visual acuity, intraocular pressure, ECD, and percentage of hexagonal cells at any time post-surgery between the 2 groups (P > .05). The mean ECD loss was 1.9% in the OVD-free group and 2.3% in the OVD group at 2 years post-surgery (P = .680). The surgical time was much shorter in the OVD-free group than that in the OVD group (P ≤ .001). None of the following occurred at any time during the 2-year follow-up period in both groups: cataract formation, macular degeneration, or any other vision-threatening complications.OVD-free ICL implantation presented satisfactory results for safety. Compared to OVD, the OVD-free technique had the advantages of decreased surgical time, increased efficiency, and reduced cost.
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Affiliation(s)
- Manqiang Peng
- Central South University Aier School of Ophthalmology
- Changsha Aier Eye Hospital, Changsha, China
| | - Qiongyan Tang
- Central South University Aier School of Ophthalmology
- Changsha Aier Eye Hospital, Changsha, China
| | - Libei Zhao
- Central South University Aier School of Ophthalmology
- Changsha Aier Eye Hospital, Changsha, China
| | - Muhanmad Ahmad Khan
- Central South University Aier School of Ophthalmology
- Changsha Aier Eye Hospital, Changsha, China
| | - Ding Lin
- Central South University Aier School of Ophthalmology
- Changsha Aier Eye Hospital, Changsha, China
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28
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Kayhan B, Coskunseven E, Sahin O, Pallikaris I. The effects of implantable collamer lens implantation on higher order aberrations. Int J Ophthalmol 2019; 12:1848-1852. [PMID: 31850167 DOI: 10.18240/ijo.2019.12.05] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 04/30/2019] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate the changes in higher order aberrations (HOAs) after implantable collamer lens (ICL; Staar Surgical, Nidau, Switzerland) implantation. METHODS Totally 30 eyes of 18 patients with myopia were included in this study with an average age of 25.77y (min: 21, max: 40). Refraction, uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), HOAs (entire, corneal and internal) were evaluated preoperatively and three months postoperatively. Ocular aberrations were measured by using iTrace (Tracey Technology, Houston, Texas, USA). SPSS (IBM Corp. Released 2013. IBM SPSS Statistics for Windows, Version 22.0. Armonk, NY: IBM Corp) was used for the statistical analysis and the interpretation of the data. P values of less than 0.05 were considered statistically significant. RESULTS The preoperative mean spherical power was -9.01 D (min: -5.00, max: -13.00) and the mean cylindrical error was -2.40 D (min: -0.50, max: -4.75). The postoperative mean residual spherical power was -0.73 D (min: -0.20, max: -1.75) and the mean cylindrical error was -0.89 D (min: -0.18, max: -2.09). Analyses were made on root mean square (RMS) values of total HOAs (tHOAs), spherical aberration, coma and trefoil as entire, corneal and internal components. The differences in entire tHOAs and in internal tHOAs were significant. There was no significant change found in spherical aberrations. The differences in entire coma and in internal coma were significant. There was no significant change found in corneal coma. With respect to trefoil, the only significant difference was in internal trefoil. CONCLUSION The ICL implantation corrects the refractive error successfully and changes entire and internal HOAs of the eye.
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Affiliation(s)
- Belma Kayhan
- Dunyagoz Hospital Group, Istanbul 34337, Turkey.,Department of Ophthalmology, Sultan Abdulhamid Han Training and Research Hospital, the University of Saglik Bilimleri, Istanbul 34668, Turkey
| | | | - Onurcan Sahin
- Dunyagoz Hospital Group, Istanbul 34337, Turkey.,Institute of Vision and Optics, University of Crete, Heraklion 70013, Greece
| | - Ioannis Pallikaris
- Dunyagoz Hospital Group, Istanbul 34337, Turkey.,Institute of Vision and Optics, University of Crete, Heraklion 70013, Greece
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29
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Chanbour WA, Cherfan CG, Jarade EF, Khoury JM. Unilateral Malignant Glaucoma Postbilateral Implantable Collamer Lens: Effect of Miotics. Middle East Afr J Ophthalmol 2019; 26:181-183. [PMID: 31619910 PMCID: PMC6788314 DOI: 10.4103/meajo.meajo_197_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 08/22/2019] [Accepted: 09/15/2019] [Indexed: 11/08/2022] Open
Abstract
An implantable collamer lens® (ICL) V4c model (STAAR Surgical, Monrovia, CA, USA) was placed in the eye of a 31-year-old male patient with high myopia followed by the development of malignant glaucoma. After failing medical treatment for 5 days, a noncomplicated pars plana vitrectomy and anterior hyaloidectomy succeeded in breaking the aqueous misdirection. Sixteen months later, intraoperative miotics were purposefully withheld from the ICL surgery in the fellow eye and malignant glaucoma did not develop. Even though the patient's visual acuity postoperatively was 20/20, OU, a single small atrophic iris patch in the affected eye resulted in slightly more halos and glare in mesopic conditions as compared to the fellow eye. Earlier surgical intervention may have prevented iris ischemia and iridocorneal touch with its subsequent iris atrophy and resulted in an even more favorable visual outcome. Withholding intraoperative miotics during ICL surgery appeared to be beneficial in this case.
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Affiliation(s)
- Wassef A Chanbour
- Department of Cornea and Refractive Surgery, Beirut Eye and ENT Specialist Hospital, Beirut, Lebanon
| | - Carole G Cherfan
- Department of Cornea and Refractive Surgery, Beirut Eye and ENT Specialist Hospital, Beirut, Lebanon.,Department of Ophthalmology, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon
| | - Elias F Jarade
- Department of Cornea and Refractive Surgery, Beirut Eye and ENT Specialist Hospital, Beirut, Lebanon.,Department of Ophthalmology, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon
| | - Johnny M Khoury
- Department of Cornea and Refractive Surgery, Beirut Eye and ENT Specialist Hospital, Beirut, Lebanon.,Department of Ophthalmology, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon
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30
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Sachdev GS, Singh S, Ramamurthy S, Rajpal N, Dandapani R. Comparative analysis of clinical outcomes between two types of posterior chamber phakic intraocular lenses for correction of myopia and myopic astigmatism. Indian J Ophthalmol 2019; 67:1061-1065. [PMID: 31238411 PMCID: PMC6611309 DOI: 10.4103/ijo.ijo_1501_18] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Purpose: To compare clinical outcomes following implantation of two types of posterior chamber phakic intraocular lenses: Visian™ Implantable Collamer Lens with Centraflow (ICL, V4C Staar Surgical, Nidau, Switzerland) and Implantable Phakic Contact Lens (IPCL, V1, Caregroup Sight Solution, India) for the correction of myopia and myopic astigmatism. Methods: This retrospective case series included eyes which underwent phakic intraocular lens implantation with a minimum follow-up period of 1 year. Visual outcomes including safety, efficacy, refractive predictability, and stability were compared at 1 week and at 1, 6, and 12 months’ postoperative visit. Complications and adverse events were analyzed. Results: The study included 119 and 203 eyes in the IPCL and ICL groups, respectively. At 1-year postoperative visit, median corrected distance visual acuity was 0.10 (interquartile range [IQR] 0,0.10) and 0 (IQR 0,0) in the IPCL and ICL cohorts, respectively (P = 0.066). An uncorrected visual acuity of 20/32 or better was achieved in 86.5% and 88.67% of the eyes, respectively (P = 0.574). Ninety and 94% of the eyes achieved a postoperative manifest spherical equivalent within ± 0.5D (P = 0.169, χ2 test). Three eyes (2.52%) in the IPCL group versus one eye (0.49%) in the ICL group developed visually significant cataract requiring surgical intervention (P = 0.113). No vision-threatening complications were noted in either cohort. The mean follow-up period was 94.69 ± 32.45 and 102.67 ± 61.82 weeks, respectively. Conclusion: Both groups demonstrated similar efficacy and safety profile. The IPCL is an effective and economically viable option for the correction of myopia.
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Affiliation(s)
| | - Shivangi Singh
- Refractive Services, The Eye Foundation, RS Puram, Coimbatore, Tamil Nadu, India
| | - Shreyas Ramamurthy
- Refractive Services, The Eye Foundation, RS Puram, Coimbatore, Tamil Nadu, India
| | - Narayan Rajpal
- Refractive Services, The Eye Foundation, RS Puram, Coimbatore, Tamil Nadu, India
| | - Ramamurthy Dandapani
- Refractive Services, The Eye Foundation, RS Puram, Coimbatore, Tamil Nadu, India
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Chen X, Guo L, Han T, Wu L, Wang X, Zhou X. Contralateral eye comparison of the long-term visual quality and stability between implantable collamer lens and laser refractive surgery for myopia. Acta Ophthalmol 2019; 97:e471-e478. [PMID: 30187653 PMCID: PMC6585688 DOI: 10.1111/aos.13846] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 05/14/2018] [Indexed: 11/29/2022]
Abstract
Purpose To investigate the long‐term visual quality and stability of implantable collamer lens (ICL) and laser refractive surgery (LRS) for myopia. Methods This study comprised 52 eyes of 26 high‐myopia anisometropia patients who were suitable for surgical treatment. In each patient, the higher‐myopia eye was implanted with ICL and the lower‐myopia eye was treated with LRS. The patients were followed for 3 years. During that time period, uncorrected (UDVA) and corrected distance visual acuity (CDVA), refraction, wavefront aberration and visual quality were evaluated. Results The spherical equivalent refractive error changed from −14.11 ± 3.39 D preoperatively to −1.27 ± 1.05 D 3 years after ICL implantation and from −8.75 ± 2.76 D to −1.12 ± 1.30 D after LRS. The changes in refractive error from 1 month to 3 years were −0.52 and −0.77 D for the ICL and LRS groups, respectively. The safety indices (postoperative CDVA/preoperative CDVA) were 1.84 ± 1.00 and 1.32 ± 0.40, and the efficacy indices (postoperative UDVA/preoperative CDVA) were 1.40 ± 1.10 and 1.11 ± 0.44, respectively. The postoperative coma, spherical and total higher‐order aberrations in the ICL group were lower than those in the LRS group. Conclusion Both ICL implantation and LRS are safe and effective procedures for myopia with suitable indications, but ICL implantation is more stable. Fewer induced aberrations are gained after ICL implantation.
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Affiliation(s)
- Xun Chen
- Department of Ophthalmology Eye and ENT Hospital of Fudan University Shanghai China
- Department of Ophthalmology NHC Key Laboratory of Myopia Fudan University Shanghai China
| | - Lin Guo
- Department of Ophthalmology Xi'an No. 4 Hospital of Xi'an Jiao Tong University Xi'an China
| | - Tian Han
- Department of Ophthalmology Eye and ENT Hospital of Fudan University Shanghai China
- Department of Ophthalmology NHC Key Laboratory of Myopia Fudan University Shanghai China
| | - Liangcheng Wu
- Department of Ophthalmology Jing'an District Centre Hospital of Fudan University Shanghai China
| | - Xiaoying Wang
- Department of Ophthalmology Eye and ENT Hospital of Fudan University Shanghai China
- Department of Ophthalmology NHC Key Laboratory of Myopia Fudan University Shanghai China
| | - Xingtao Zhou
- Department of Ophthalmology Eye and ENT Hospital of Fudan University Shanghai China
- Department of Ophthalmology NHC Key Laboratory of Myopia Fudan University Shanghai China
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Abstract
Purpose To review the safety of the implantable phakic contact lens (IPCL V1, Caregroup Sight Solutions, India) for correction of myopia and myopic astigmatism. Methods Retrospective interventional case series including 134 eyes which underwent IPCL implantation for correction of myopia and myopic astigmatism at a tertiary eye care hospital in South India. Intraoperative and postoperative complications were analyzed. The following parameters were analyzed at preoperative and 1, 6 and 12 month postoperative visits: visual acuity (in logMAR) and manifest refraction, slit lamp bio microscopy, dilated fundus examination, IOP and endothelial cell density measurement. Results No intraoperative complications were noted. Cataract was the most common postoperative complication, wherein three eyes (2.2%) underwent observation for visually insignificant anterior subcapsular cataract and one eye (0.7%) required surgical intervention. Four eyes developed transient increased IOP due to steroid response (3 eyes) and pupillary block glaucoma (1 eye). The endothelial cell loss noted over a 1-year follow-up was 2.01%±4.12% (P=0.71). One eye developed hypopyon on the third postoperative day, which resolved subsequently with an unaided vision of 20/20. No vision threatening complications were noted. The mean follow-up in the cohort was 25.66±16.45 months. Conclusion The IPCL is a safe and effective treatment modality for correction of myopia and myopic astigmatism.
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Abstract
Purpose To evaluate the long-term predictability, stability, safety, and efficacy of the V4c Visian implantable collamer lens (ICL) with central hole to correct myopia. Patients and methods One hundred and eighty-four eyes of 92 patients were evaluated during 3 years after implantation of the V4c ICL. The refraction, uncorrected distance visual acuity, best-corrected distance visual acuity, IOP, endothelial cell count, vault, and adverse effects were evaluated every 12 months during the whole follow-up. Results The mean spherical equivalent dropped from -8.30±2.98 D preoperatively to −0.37±0.47 D at 36 months post-surgery, with 91.8% eyes being within ±1.00 D of emmetropia. With respect to the astigmatic components J0 and J45, 98.4% and 99.5% of eyes, respectively, were within ±0.50 D of the desired refraction. At 36 months, 78.8% of eyes had no change in the Snellen lines of best-corrected distance visual acuity, while 8.7% gained one line and 6.5% gained two or more lines; mean safety and efficacy indexes were 1.03 and 0.90, respectively. Mean endothelial cell count was 2,742±340 cells/mm2 before and 2,663±366 cells/mm2 at 36 months post-surgery. Mean IOP reduced from 13.7±1.9 mmHg preoperatively to 12.8±1.7 mmHg at 36 months post-surgery. Mean vault varied from 409±196 µm at 12 months to 349±165 µm at 36 months. Conclusion The visual and refractive outcomes were very good and highly stable throughout the follow-up period, indicating that this ICL model may be predictable, stable, safe, and effective to correct myopia in the long term.
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Affiliation(s)
| | - Carlos Lisa
- Department of Surgery, Fernández-Vega Ophthalmological Institute, Oviedo, Spain,
| | - José J Esteve-Taboada
- Department of Optics and Optometry and Visual Sciences, University of Valencia, Valencia, Spain
| | - Robert Montés-Micó
- Department of Optics and Optometry and Visual Sciences, University of Valencia, Valencia, Spain
| | - José F Alfonso
- Department of Surgery, Fernández-Vega Ophthalmological Institute, Oviedo, Spain, .,School of Medicine, University of Oviedo, Oviedo, Spain,
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Pjano MA, Pidro A, Biscevic A, Grisevic S, Pandzic B, Cerovic V. Refractive Outcomes of Posterior Chamber Phakic Intraocular Lens Implantation for Correction of Myopia and Myopic Astigmatism. Med Arch 2018; 71:93-96. [PMID: 28790537 PMCID: PMC5511534 DOI: 10.5455/medarh.2017.71.93-96] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Objectives: The aim was to examine efficacy and safety after Implantable Collamer Lens (ICL) implantation for correction of myopia et myopic astigmatism. Methods: This prospective clinical study included 28 eyes of 16 patients which underwent implantation of ICL for correction of myopia up to -18,00 diopters (D) and myopic astigmatism up to -6,00 D in the Eye Clinic Svjetlost Sarajevo, from January 2013 to January 2016. Uncorrected distance visual acuity (UDVA), spherical equivalent (SE), corrected distance visual acuity (CDVA), intraocular pressure (IOP), endothelial cell (EC) density were evaluated at one, six and twelve months. For statistical analysis SPSS for Windows and Microsoft Excel were used. Results: Out of 16 patients, with mean age of 28,21 ± 4,06 years, 12 of them had binocular and 4 of them had monocular procedure. After 12 months mean UDVA was 0,76 ± 0,16 compared to UDVA 0,04 ± 0,03 preoperatively. Mean SE preoperatively was -0,21 ± 0,27 D compared to -9,52 ± 3,69 D preoperatively. At 12 months one eye (3,57%) lost 2 Snellen lines. In this study 8 eyes (28,57%) gained 1 line, 5 eyes gained (17,56%) 2 lines, and 3 eyes (10,72%) gained 3 lines. EC loss was 5,50±4.71% after 12 months. There was no significant change of IOP by the end of 12 months follow up period. One haptic crack was reported as the only intraoperative complication. Three postoperative complications were: two lens rotations and one retinal detachment. Conclusion: Implantation of ICL is an effective and safe method for reducing or correcting myopia and myopic astigmatism.
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Affiliation(s)
| | - Ajla Pidro
- Eye Clinic Svjetlost, Sarajevo, Bosnia and Herzegovina
| | - Alma Biscevic
- Eye Clinic Svjetlost, Sarajevo, Bosnia and Herzegovina
| | | | | | - Vesna Cerovic
- University Eye Hospital "Svjetlost", Zagreb, Croatia
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Liu HT, Zhou Z, Luo WQ, He WJ, Agbedia O, Wang JX, Huang JZ, Gao X, Kong M, Li M, Li L. Comparison of optical quality after implantable collamer lens implantation and wavefront-guided laser in situ keratomileusis. Int J Ophthalmol 2018; 11:656-661. [PMID: 29675387 DOI: 10.18240/ijo.2018.04.20] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 02/05/2018] [Indexed: 12/25/2022] Open
Abstract
AIM To compare the optical quality after implantation of implantable collamer lens (ICL) and wavefront-guided laser in situ keratomileusis (WG-LASIK). METHODS The study included 40 eyes of 22 patients with myopia who accepted ICL implantation and 40 eyes of 20 patients with myopia who received WG-LASIK. Before surgery and three months after surgery, the objective scattering index (OSI), the values of modulation transfer function (MTF) cutoff frequency, Strehl ratio, and the Optical Quality Analysis System (OQAS) values (OVs) were accessed. The higher order aberrations (HOAs) data including coma, trefoil, spherical, 2nd astigmatism and tetrafoil were also obtained. For patients with pupil size <6 mm, HOAs data were analyzed for 4 mm-pupil diameter. For patients with pupil size ≥6 mm, HOAs data were calculated for 6 mm-pupil diameter. Visual acuity, refraction, pupil size and intraocular pressures were also recorded. RESULTS In both ICL and WG-LASIK group, significant improvements in visual acuities were found postoperatively, with a significant reduction in spherical equivalent (P< 0.001). After the ICL implantation, the OSI decreased slightly from 2.34±1.92 to 2.24±1.18 with no statistical significance (P=0.62). While in WG-LASIK group, the OSI significantly increased from 0.68±0.43 preoperatively to 0.91±0.53 postoperatively (Wilcoxon signed ranks test, P=0.000). None of the mean MTF cutoff frequency, Strehl ratio, OVs showed statistically significant changes in both ICL and WG-LASIK groups. In the ICL group, there were no statistical differences in the total HOAs for either 4 mm-pupil or 6 mm-pupil. In the WG-LASIK group, the HOA parameters increased significantly at 4 mm-pupil. The total ocular HOAs, coma, spherical and 2nd astigmatism were 0.12±0.06, 0.06±0.03, 0.00±0.03, 0.02±0.01, respectively. After the operation, these values were increased into 0.16±0.07, 0.08±0.05, -0.04±0.04, 0.03±0.01 respectively (Wilcoxon signed ranks test, all P<0.05). At 6 mm-pupil, the induction of total HOAs was not statistically significant in the WG-LASIK group. CONCLUSION ICL implantation has a less disturbance to optical quality than WG-LASIK. The OQAS is a valuable complementary measurement to the wavefront aberrometers in evaluating the optical quality.
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Affiliation(s)
- Hong-Ting Liu
- Visual Science and Optometry Center, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Zhou Zhou
- Ophthalmology Center, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Wu-Qiang Luo
- Visual Science and Optometry Center, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Wen-Jing He
- Ophthalmology Center, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Owhofasa Agbedia
- Wilmer Eye Institute, Johns Hopkins University, Baltimore 21211, Maryland, USA
| | - Jiang-Xia Wang
- Biostatistics Department, School of Public Health, Johns Hopkins University, Baltimore 21211, Maryland, USA
| | - Jian-Zhong Huang
- Visual Science and Optometry Center, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Xin Gao
- Institute of Aviation Human Factors and Ergonomics, Civil Aviation Flight University of China, Guanghan 618300, Sichuan Province, China
| | - Min Kong
- Visual Science and Optometry Center, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Min Li
- Ophthalmology Center, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Li Li
- Ophthalmology Center, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi Zhuang Autonomous Region, China
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Abstract
The aim of this study was to investigate the visual quality of the 2 kinds of intraocular lens: Visian implantable collamer lens (ICL) V4 and Visian ICL V4c implantations for high myopia.Twenty cases (20 eyes) with high myopia who received Visian ICL V4 implantation and 18 cases (18 eyes) with high myopia who received Visian ICL V4c implantation in our hospital from April 1, 2014 to November 31, 2016 were enrolled. In 1-month follow-up, near vision, best corrected distant visual acuity (BCVA), uncorrected distant visual acuity (UDVA), and wavefront aberrations were measured, and compensation factor was calculated.Near vision, UDVA, and BCVA showed no significant difference between ICL V4 implantation and ICL V4c implantation (P >.05). However, high-order aberrations and spherical aberrations were higher in ICL V4c implantation than in ICL V4 implantation (P <.05). Low-order aberrations (defocus and astigmatism), coma, and subjective visual quality had no significant difference between ICL V4 implantation and ICL V4c implantation (P >.05).The 2 kinds of ICL Visian ICL V4 and Visian ICL V4c had similar efficacy of visual quality for high myopia. The presence of the central hole of Visian ICL V4c has no significant effect on visual quality.
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Park MJ, Jeon HM, Lee KH, Han SY. Comparison of postoperative optical quality according to the degree of decentering of V4c implantable collamer lens. Int J Ophthalmol 2017; 10:619-623. [PMID: 28503437 DOI: 10.18240/ijo.2017.04.19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 11/08/2016] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate the clinical outcomes of V4c implantable collamer lens (Hole ICL) implantation with regard to the optical quality assessed according to different degrees of decentering. METHODS This included 49 eyes that received conventional ICL and 94 eyes that received Hole ICL. The eyes that received Hole ICL were divided into three groups according to the degree of decentering: group 1, central hole within 1 hole diameter (HD) from the pupil center; group 2, central hole within 1 HD to 2 HD; and group 3, central hole within 2 HD to 3 HD. Visual acuity (VA), intraocular pressure (IOP), and spherical equivalent (SE) values were assessed at 1wk, 1 and 3mo after surgery. The ocular modulation transfer function, Strehl ratio, objective scattering index, and higher order aberrations (HOAs) were measured for 4-mm pupils at 3mo after surgery. RESULTS There were no significant differences in VA, IOP, and SE among the conventional and Hole ICL groups. With regard to HOAs, values for coma and spherical aberrations showed no differences. The total HOA and trefoil values were significantly higher in group 2 than in group 1 (P=0.02, 0.03, respectively). There were no significant differences among groups with regard to other optical quality parameter at 3mo after surgery. CONCLUSION Our results suggest that Hole ICL implantation provides satisfactory visual quality that is equivalent to that provided by conventional ICL, regardless of the presence of central hole and degree of decentering.
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Affiliation(s)
- Min Ji Park
- Department of Cornea and Refractive Surgery, Sungmo Eye Hospital, Busan 48064, Korea
| | - Hye Min Jeon
- Department of Cornea and Refractive Surgery, Sungmo Eye Hospital, Busan 48064, Korea
| | - Kyoung Heon Lee
- Department of Cornea and Refractive Surgery, Sungmo Eye Hospital, Busan 48064, Korea
| | - Sang Youp Han
- Department of Cornea and Refractive Surgery, Sungmo Eye Hospital, Busan 48064, Korea
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AlSabaani NA, Behrens A, Jastanieah S, Al Malki S, Al Jindan M, Al Motowa S. Causes of Phakic Implantable Collamer Lens Explantation/Exchange at King Khaled Eye Specialist Hospital. Middle East Afr J Ophthalmol 2017; 23:293-295. [PMID: 27994391 PMCID: PMC5141621 DOI: 10.4103/0974-9233.194076] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
PURPOSE The purpose of this study is to evaluate the causes of phakic implantable collamer lens (ICL) explantation/exchange at an eye hospital in Saudi Arabia. MATERIALS AND METHODS A retrospective chart review was performed for patients who underwent ICL implantation from 2007 to March 2014 and data were collected on cases that underwent ICL explantation. RESULTS Of the 787 ICL implants, 30 implants (3.8% [95% confidence interval 2.6%; 5.3%]) were explanted. The causes of explantation included incorrect lens size (22), cataract (4), high residual astigmatism (2), rhegmatogenous retinal detachment (1), and intolerable glare (1). Corrective measures mainly included an exchange with an appropriately sized lens (9), ICL explantation (11), with phacoemulsification and posterior chamber intraocular lens implantation (6), or replacement with an ICL of correct power (2). CONCLUSION Incorrect ICL size was the most common cause of ICL explantation. More accurate sizing methods for ICL are required to reduce the explantation/exchange rate.
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Affiliation(s)
- Nasser A AlSabaani
- Department of Ophthalmology, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Ashley Behrens
- King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia; Wilmer Eye Institute, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Salem Al Malki
- King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
| | - Mohanna Al Jindan
- Wilmer Eye Institute, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Eissa SA. Management of pseudophakic myopic anisometropic amblyopia with piggyback Visian ® implantable collamer lens. Acta Ophthalmol 2017; 95:188-193. [PMID: 27681455 DOI: 10.1111/aos.13203] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Accepted: 06/21/2016] [Indexed: 11/29/2022]
Abstract
PURPOSE To assess the outcomes of sulcus implantation of the Visian® implantable collamer lens (ICL) to correct pseudophakic myopic anisometropic amblyopia with myopic shift and/or primary refractive overcorrection. METHODS Prospective case series enrolled 14 pseudophakic eyes of 14 patients, 5-9 years old, with history of cataract surgery and primary in the bag-intraocular lenses (IOL) implantation, followed by myopic shift and/or refractive overcorrection and anisometropic amblyopia of variable degrees. All cases had implantation of a piggyback ICL/toric ICL, to correct the myopia/myopic astigmatism. Preoperatively, we evaluated the uncorrected distance visual acuity (UCVA), corrected distance visual acuity (CDVA), manifest refraction spherical equivalent (MRSE), intraocular pressure (IOP) and endothelial cell density (ECD). We assessed the position and vaulting of the ICLs on slit lamp examination and confirmed by Scheimpflug tomography. Postoperative follow-up was at 1st week and 1, 3, 6, 9, 12, 18 and 24 months. RESULTS Uncorrected distance visual acuity improved in all cases, and CDVA improved in 11 amblyopic eyes (2-4 lines). There was no evidence of interlenticular opacification (ILO) throughout the 2-year follow-up. Two cases were complicated with early postoperative acute elevation of IOP and were controlled with topical beta-blockers. Postoperative acute anterior uveitis occurred in six eyes and controlled by topical steroids. Implantable collamer lens (ICL) vault was measured using Pentacam, with mean value of 470 ± 238 μm. CONCLUSION Sulcus implantation of the secondary piggyback ICL to correct unilateral pseudophakic myopic refractive error in children was safe, efficient, predictable and well tolerated in management of anisometropic amblyopia in all eyes.
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Affiliation(s)
- Sherif A. Eissa
- Faculty of medicine; Kasr Al Ainy; Ophthalmology department; Cairo University; Cairo Egypt
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Chen X, Wang XY, Zhang X, Chen Z, Zhou XT. Implantable collamer lens for residual refractive error after corneal refractive surgery. Int J Ophthalmol 2016; 9:1421-1426. [PMID: 27803858 DOI: 10.18240/ijo.2016.10.09] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 06/29/2016] [Indexed: 11/23/2022] Open
Abstract
AIM To assess the safety, efficacy, predictability and stability of implantable collamer lens (ICL) for residual refractive error after corneal refractive surgery. METHODS This study evaluated 19 eyes of 12 patients who underwent ICL implantation after corneal refractive surgeries. They were followed up for 1y to 5y of uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refractive error, flat and steep K value, axial length, intraocular pressure, corneal endothelial cell density, adverse events after ICL surgery. RESULTS The mean follow-up period was 39.05±19.22 mo (range, 1-5y). Spherical equivalent refractive error changed from -7.45±3.02 D preoperatively to -0.85±1.10 D 1wk to 1mo after ICL implantation, with the safety and efficacy indices being 1.12 and 1.15, respectively. A total of 52.63% of eyes were within ±0.5 D of the predicted spherical equivalents, 73.68% were within ±1.0 D. A trend of mild regression towards myopia with axial elongation after 5y was observed. One eye with mild anterior capsule opacity and retinal detachment 1y after surgery were observed. CONCLUSION ICL implantation is safe and effective for the correction of residual refractive error after corneal refractive surgeries, especially in moderate to high residual myopia.
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Affiliation(s)
- Xun Chen
- Myopia Key Laboratory of the Health Ministry, Shanghai 200031, China; Department of Ophthalmology, EYE and ENT Hospital of Fudan University, Shanghai 200031, China
| | - Xiao-Ying Wang
- Myopia Key Laboratory of the Health Ministry, Shanghai 200031, China; Department of Ophthalmology, EYE and ENT Hospital of Fudan University, Shanghai 200031, China
| | - Xi Zhang
- Myopia Key Laboratory of the Health Ministry, Shanghai 200031, China; Department of Ophthalmology, EYE and ENT Hospital of Fudan University, Shanghai 200031, China
| | - Zhi Chen
- Myopia Key Laboratory of the Health Ministry, Shanghai 200031, China; Department of Ophthalmology, EYE and ENT Hospital of Fudan University, Shanghai 200031, China
| | - Xing-Tao Zhou
- Myopia Key Laboratory of the Health Ministry, Shanghai 200031, China; Department of Ophthalmology, EYE and ENT Hospital of Fudan University, Shanghai 200031, China
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Parkhurst GD. A prospective comparison of phakic collamer lenses and wavefront-optimized laser-assisted in situ keratomileusis for correction of myopia. Clin Ophthalmol 2016; 10:1209-15. [PMID: 27418804 PMCID: PMC4935102 DOI: 10.2147/opth.s106120] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate and compare night vision and low-luminance contrast sensitivity (CS) in patients undergoing implantation of phakic collamer lenses or wavefront-optimized laser-assisted in situ keratomileusis (LASIK). PATIENTS AND METHODS This is a nonrandomized, prospective study, in which 48 military personnel were recruited. Rabin Super Vision Test was used to compare the visual acuity and CS of Visian implantable collamer lens (ICL) and LASIK groups under normal and low light conditions, using a filter for simulated vision through night vision goggles. RESULTS Preoperative mean spherical equivalent was -6.10 D in the ICL group and -6.04 D in the LASIK group (P=0.863). Three months postoperatively, super vision acuity (SVa), super vision acuity with (low-luminance) goggles (SVaG), super vision contrast (SVc), and super vision contrast with (low luminance) goggles (SVcG) significantly improved in the ICL and LASIK groups (P<0.001). Mean improvement in SVaG at 3 months postoperatively was statistically significantly greater in the ICL group than in the LASIK group (mean change [logarithm of the minimum angle of resolution, LogMAR]: ICL =-0.134, LASIK =-0.085; P=0.032). Mean improvements in SVc and SVcG were also statistically significantly greater in the ICL group than in the LASIK group (SVc mean change [logarithm of the CS, LogCS]: ICL =0.356, LASIK =0.209; P=0.018 and SVcG mean change [LogCS]: ICL =0.390, LASIK =0.259; P=0.024). Mean improvement in SVa at 3 months was comparable in both groups (P=0.154). CONCLUSION Simulated night vision improved with both ICL implantation and wavefront-optimized LASIK, but improvements were significantly greater with ICLs. These differences may be important in a military setting and may also affect satisfaction with civilian vision correction.
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Affiliation(s)
- Gregory D Parkhurst
- Refractive Surgery Center, Carl R Darnall Army Medical Center, Fort Hood; Parkhurst NuVision, San Antonio, TX, USA
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Moshirfar M, Stagg BC, Muthappan V, Vasavada SA. Traumatic dislocation of implanted collamer phakic lens: a case report and review of the literature. Open Ophthalmol J 2014; 8:24-6. [PMID: 24959305 PMCID: PMC4066362 DOI: 10.2174/1874364101408010024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 05/09/2014] [Accepted: 05/14/2014] [Indexed: 12/02/2022] Open
Abstract
Purpose : Present a case of dislocation of an Implantable Collamer Lens (ICL) that occurs after blunt trauma and review the published literature on this topic. Methods : Case report and literature review using PubMed. Results : A 44 year-old male presented to the emergency department with sudden onset of blurry vision after blunt trauma to the left eye. Three years prior, he had undergone bilateral ICL placement for high myopia. On examination, the superotemporal haptic was noted to be dislocated into the anterior chamber, but there was no endothelial touch by the dislocated lens. The patient had an associated hyphema that was medically managed, and 2 weeks after the injury, the patient underwent ICL repositioning. A review of the literature was performed and five previous cases of ICL dislocation were identified. Three of these occurred after blunt trauma. One of these cases was associated with endothelial touch and decompensation and eventually required a descement’s stripping endothelial keratoplasty (DSAEK). Conclusion : Dislocation of ICLs after blunt trauma is a rare but important potential sequela of the procedure and can lead to corneal decompensation if there is lens-endothelial touch. All patients who suffer blunt dislocation of ICL should be followed long-term after repositioning for signs of endothelial loss and dysfunction.
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Affiliation(s)
- Majid Moshirfar
- John A. Moran Eye Center, University of Utah School of Medicine, USA
| | - Brian C Stagg
- John A. Moran Eye Center, University of Utah School of Medicine, USA
| | | | - Shail A Vasavada
- John A. Moran Eye Center, University of Utah School of Medicine, USA
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Abstract
Abstract We describe two cases of a macular hole (MH) which had divergent manifestations and clinical courses following implantation of an Implantable Collamer Lens (ICL) in two high myopic patients. The onset of symptoms and shape of the holes, which were observed by optical coherence tomography and fundoscopy, and prognosis of the visual acuity after the surgery of each patient, were quite different. In the first patient, the symptom was an acute onset. Fundoscopy showed a cuneiform-shaped hole with internal limiting membrane defect around the hole. The prognosis after the surgery was very poor, and the best corrected visual acuity was 0.08 after complete anatomical closure. In another patient, the MH showed insidious progression with disease-free interval from ICL implantation to MH onset. After the surgery, the best corrected visual acuity was recovered to 1.0.
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Affiliation(s)
- Jong Hwa Jun
- Department of Ophthalmology, School of Medicine, Dongsan Medical Center, Keimyung University , Daegu , Korea
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44
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Abstract
Aim: To compare the outcomes of clear lens extraction and collamer lens implantation in high myopia. Patients and methods: Myopic patients younger than 40 years old with more than 12 diopters of myopia or who were not fit for laser-assisted in situ keratomileusis were included. Group 1 comprised patients undergoing clear lens extraction and Group 2 patients received the Visian implantable collamer lens. Outcome and complications were evaluated. Results: Postoperative best corrected visual acuity was −0.61 ± 0.18 in Group 1 and 0.79 ± 0.16 in Group 2. In Group 1, 71.4% achieved a postoperative uncorrected visual acuity better than the preoperative best corrected visual acuity, while only 51.8% patients achieved this in Group 2. Intraocular pressure decreased by 12.55% in Group 1, and increased by 15.11% in Group 2. Corneal endothelial cell density decreased by 4.47% in Group 1 and decreased by 5.67% in Group 2. Posterior capsule opacification occurred in Group 1. In Group 2, lens opacification occurred in 11.11%, significant pigment dispersion in 3.7%, and pupillary block glaucoma in 3.7%. Conclusion: Clear lens extraction presents less of a financial load up front, and less likelihood of the need for a secondary intervention in the future. Clear lens extraction is a more viable solution in developing countries with limited financial resources.
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