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Crincoli E, Servillo A, Catania F, Sacconi R, Mularoni C, Battista M, Querques L, Parravano M, Costanzo E, Polito MS, Bandello F, Querques G. ARTIFICIAL INTELLIGENCE'S ROLE IN DIFFERENTIATING THE ORIGIN FOR SUBRETINAL BLEEDING IN PATHOLOGIC MYOPIA. Retina 2023; 43:1881-1889. [PMID: 37490781 DOI: 10.1097/iae.0000000000003884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
PURPOSE To identify salient imaging features to support human-based differential diagnosis between subretinal hemorrhage (SH) due to choroidal neovascularization (CNV) onset and SH without CNV (simple bleeding [SB]) in pathologic myopia eyes using a machine learning (ML)-based step-wise approach. METHODS Four different methods for feature extraction were applied: GradCAM visualization, reverse engineering, image processing, and human graders' measurements. GradCAM was performed on a deep learning model derived from Inception-ResNet-v2 trained with OCT B-scan images. Reverse engineering consisted of merging U-Net architecture with a deconvolutional network. Image processing consisted of the application of a local adaptive threshold. Available OCT B-scan images were divided in two groups: the first group was classified by graders before knowing the results of feature extraction and the second (different images) was classified after familiarization with the results of feature extraction. RESULTS Forty-seven and 37 eyes were included in the CNV group and the simple bleeding group, respectively. Choroidal neovascularization eyes showed higher baseline central macular thickness ( P = 0.036). Image processing evidenced in CNV eyes an inhomogeneity of the subretinal material and an interruption of the Bruch membrane at the margins of the SH area. Graders' classification performance improved from an accuracy of 76.9% without guidance to 83.3% with the guidance of the three methods ( P = 0.02). Deep learning accuracy in the task was 86.0%. CONCLUSION Artificial intelligence helps identifying imaging biomarkers suggestive of CNV in the context of SH in myopia, improving human ability to perform differential diagnosis on unprocessed baseline OCT B-scan images. Deep learning can accurately distinguish between the two causes of SH.
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Affiliation(s)
- Emanuele Crincoli
- Division of Head and Neck, Ophthalmology Unit, IRCSS Ospedale San Raffaele, Milan, Italy
| | - Andrea Servillo
- Division of Head and Neck, Ophthalmology Unit, IRCSS Ospedale San Raffaele, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - Fiammetta Catania
- Department of Biomedical Sciences, Humanitas University, Milan, Italy; and
| | - Riccardo Sacconi
- Division of Head and Neck, Ophthalmology Unit, IRCSS Ospedale San Raffaele, Milan, Italy
| | - Cecilia Mularoni
- Division of Head and Neck, Ophthalmology Unit, IRCSS Ospedale San Raffaele, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - Marco Battista
- Division of Head and Neck, Ophthalmology Unit, IRCSS Ospedale San Raffaele, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - Lea Querques
- Division of Head and Neck, Ophthalmology Unit, IRCSS Ospedale San Raffaele, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | | | | | | | - Francesco Bandello
- Division of Head and Neck, Ophthalmology Unit, IRCSS Ospedale San Raffaele, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - Giuseppe Querques
- Division of Head and Neck, Ophthalmology Unit, IRCSS Ospedale San Raffaele, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
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Liu J, Song S, Gu X, Yu X. PREDICTIVE ROLES OF QUANTITATIVE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY FEATURES IN PROGNOSIS OF MYOPIC CHOROIDAL NEOVASCULARIZATION. Retina 2023; 43:1673-1679. [PMID: 37721725 DOI: 10.1097/iae.0000000000003856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
PURPOSE To explore the predictive roles of the morphologic features of neovascularization in the prognosis of myopic choroidal neovascularization. METHODS In this retrospective case series study, quantitative morphologic features of neovascularization were obtained from the optical coherence tomography angiography images. According to the number of anti-vascular endothelial growth factor injections administered within 1 year, the eyes were classified into a stable group (≤2 injections) or an unstable group (>2 injections). Best-corrected visual acuity was recorded before the treatment and at the 1-year follow-up. RESULTS Overall, 50 eyes with treatment-naive myopic choroidal neovascularization were included; 26 in the stable group and 24 in the unstable group. Multivariate analysis showed that the eyes in the unstable group were associated with a larger lesion area (odds ratio = 2.596, P = 0.012), higher junction density (odds ratio = 1.611, P = 0.014), and higher end point density (odds ratio = 1.435, P = 0.023).The area under the receiver operating characteristic curve of the multivariate model was 0.865, with 91.7% sensitivity and 65.4% specificity. The final best-corrected visual acuity was significantly correlated with the lesion area (β = 0.152, P = 0.032) after adjusted for age, sex, and baseline best-corrected visual acuity. CONCLUSION Lesions with larger areas and higher end point and junction densities tended to have more frequent anti-vascular endothelial growth factor injections and worse visual outcomes in eyes with myopic choroidal neovascularization.
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Affiliation(s)
- Jing Liu
- Department of Ophthalmology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China; and
- Graduate School of Peking Union Medical College, Beijing, China
| | - Shuang Song
- Department of Ophthalmology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China; and
| | - Xiaoya Gu
- Department of Ophthalmology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China; and
| | - Xiaobing Yu
- Department of Ophthalmology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China; and
- Graduate School of Peking Union Medical College, Beijing, China
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Xiao H, Zhao X, Li S, Sun L, Xin W, Wang Z, Zhang A, Zhang J, Ding X. Risk factors for subretinal fibrosis after anti-VEGF treatment of myopic choroidal neovascularisation. Br J Ophthalmol 2020; 105:103-108. [PMID: 32161005 DOI: 10.1136/bjophthalmol-2019-315763] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 02/20/2020] [Accepted: 02/27/2020] [Indexed: 11/04/2022]
Abstract
PURPOSE To assess the incidence, clinical features and predictive risk factors of subretinal fibrosis after treatment of active myopic choroidal neovascularisation (mCNV) with anti-vascular endothelial growth factor (VEGF). METHODS This post-hoc analysis of a randomised controlled trial included a total of 54 patients with active mCNV. The clinical data at baseline, month 3 and month 12 were used. Fundus photography and optical coherence tomography at month 3 were used to determine the presence of subretinal fibrosis after anti-VEGF therapy, and its incidence was calculated. Best-corrected visual acuity (BCVA), Visual Function Questionnaire-25 score, macular integrity index (MI) and their changes were compared between eyes with and without subretinal fibrosis. A logistic regression model was used to evaluate the risk factors of subretinal fibrosis. RESULTS Subretinal fibrosis occurred in 22 of 54 eyes with mCNV. Patients with subretinal fibrosis achieved similar BCVA improvement in comparison with those without fibrosis at 3 and 12 months after the treatment; however, they had lower visual acuity, more subfoveal CNV (p=0.002), higher CNV thickness at baseline (p=0.016), larger CNV size (p=0.030), larger leakage area (p=0.021) and higher presence of advanced myopic maculopathy (p=0.035). Age <45 years, BCVA <60 ETDRS letters, and MI index <20 at baseline were the predictors for subretinal fibrosis occurrence in a logistic regression model. CONCLUSIONS The incidence of subretinal fibrosis after anti-VEGF therapy was 40.7% in eyes with mCNV. Age, baseline BCVA and MI index could serve as predictive risk factors of subretinal fibrosis after anti-VEGF treatment in patients with mCNV.
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Affiliation(s)
- Hu Xiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China.,The 7th Affiliated Hospital, Sun Yat-Sen University, ShenZhen, Guangdong, China
| | - Xiujuan Zhao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Songshan Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Limei Sun
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Wen Xin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China.,The 7th Affiliated Hospital, Sun Yat-Sen University, ShenZhen, Guangdong, China
| | - Zhirong Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Aiyuan Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Junyan Zhang
- Statistics, Bothwin Clinical Study US, Redmond, Washington, USA
| | - Xiaoyan Ding
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
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Hamilton RD, Clemens A, Minnella AM, Lai TYY, Dai H, Sakamoto T, Gemmy Cheung CM, Ngah NF, Dunger-Baldauf C, Holz FG. Real-world effectiveness and safety of ranibizumab for the treatment of myopic choroidal neovascularization: Results from the LUMINOUS study. PLoS One 2020; 15:e0227557. [PMID: 31961888 PMCID: PMC6974143 DOI: 10.1371/journal.pone.0227557] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 12/20/2019] [Indexed: 11/19/2022] Open
Abstract
Purpose To assess the 1-year effectiveness, safety, and treatment patterns of ranibizumab in patients with myopic choroidal neovascularization (mCNV) enrolled in the LUMINOUS study. Methods This 5-year, prospective, multicenter, observational, study enrolled 30,138 patients across all approved ranibizumab indications from outpatient ophthalmology clinics. 297 consenting patients (≥18 years) with mCNV who were treatment-naïve or prior-treated with ranibizumab or other ocular treatments were enrolled, and treated with ranibizumab according to the local product label. The main outcomes are visual acuity (VA; Early Treatment Diabetic Retinopathy Study letters or equivalent), adverse events during the study, and treatment exposure over 1 year. Results are presented by prior treatment status of the study eye and injection frequency. Results Of the 297 mCNV patients recruited in the study, 108 were treatment-naïve and 175 were prior ranibizumab-treated. At baseline, the mean age of patients was 57.6 years, and 59.0 years and 80.6% and 65.7% were female in the treatment-naïve and prior ranibizumab-treated groups, respectively. Most were Caucasian (treatment-naïve, 88.9%; prior ranibizumab-treated, 86.9%). The mean (±standard deviation [SD]) VA letter changes to 1 year were +9.7 (±17.99) from 49.5 (±20.51) and +1.5 (±13.15) from 58.5 (±19.79) and these were achieved with a mean (SD) of 3.0 (±1.58) and 2.6 (±2.33) injections in the treatment-naïve and prior ranibizumab-treated groups, respectively. Presented by injection frequencies 1–2, 3–4 and ≥5 injections in Year 1, the mean (SD) VA changes were +15.0 (±14.70), +7.7 (±19.91) and −0.7 (±16.05) in treatment-naïve patients and +1.5 (±14.57), +3.1 (±11.53) and −3.6 (±11.97) in prior ranibizumab-treated patients, respectively. The safety profile was comparable with previous ranibizumab studies. Conclusions Ranibizumab treatment for mCNV showed robust VA gains in treatment-naïve patients and VA maintenance in prior ranibizumab-treated patients in a clinical practice setting, consisting mainly of Caucasians. No new safety signals were observed during the study.
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Affiliation(s)
- Robin D. Hamilton
- Department of Medical Retina, Moorfields Eye Hospital NHS Foundation Trust and National Institute for Health Research (NIHR) Biomedical Research Centre (BRC) at Moorfields Eye Hospital, London, United Kingdom
| | - Andreas Clemens
- Medical Affairs Region Europe, Ophthalmology, Novartis Pharma AG, Basel, Switzerland
- Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- * E-mail:
| | - Angelo Maria Minnella
- Department of Ophthalmology, Catholic University of Sacred Hearth—Foundation “Policlinico Universitario A. Gemelli"—IRCCS, Rome, Italy
| | - Timothy Y. Y. Lai
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, Hong Kong Eye Hospital, Hong Kong SAR, China
| | - Hong Dai
- Department of Ophthalmology, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Taiji Sakamoto
- Department of Ophthalmology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | | | | | | | - Frank G. Holz
- Department of Ophthalmology, University of Bonn, Bonn, Germany
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LONG-TERM OUTCOMES OF RANIBIZUMAB TREATMENT OF MYOPIC CHOROIDAL NEOVASCULARIZATION IN EAST-ASIAN PATIENTS FROM THE RADIANCE STUDY. Retina 2019; 38:2228-2238. [PMID: 28961671 PMCID: PMC6221407 DOI: 10.1097/iae.0000000000001858] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A retrospective cohort study of East-Asian patients previously treated with ranibizumab for myopic choroidal neovascularization in the RADIANCE trial. Clinical charts were reviewed to assess long-term efficacy and safety. Visual acuity was sustained for additional 36 months after trial completion with few patients requiring additional treatment and no new safety concerns observed. Purpose: To evaluate long-term efficacy and safety of ranibizumab for treatment of myopic choroidal neovascularization (mCNV) in clinical practice. Methods: Noninterventional, retrospective cohort study of East-Asian patients previously treated with ranibizumab during the RADIANCE trial. Forty-one patients who completed the RADIANCE trial were followed-up for up to 48 months (post-RADIANCE observation period). Outcome measures were best-corrected visual acuity changes from baseline (assessed at RADIANCE trial initiation), mCNV recurrences, and ocular adverse events. Results: Mean visual gain from baseline best-corrected visual acuity (56.5 ± 12.1 letters) (20/80) was significant at 12 months (+14.3 ± 11.4 letters, n = 40, P < 0.0001), 24 months (+10.4 ± 22.3 letters, n = 31, P = 0.0143), 30 months (+11.0 ± 22.4 letters, n = 29, P = 0.0134), 42 months (+12.9 ± 20.9 letters, n = 25, P = 0.0051), and 48 months (+16.3 ± 18.7, n = 16, P = 0.0034). Of the 16 patients who completed 48 months of follow-up, 63% gained ≥10 letters and 13% lost ≥10 letters. Over the post-RADIANCE observation period, 83% of patients required no further treatment for mCNV, 10% experienced mCNV recurrences, and 12% experienced a nonserious ocular adverse event. Patients who required additional treatment for mCNV received a mean of 5.0 (SD 5.9, range 1.0–18.0) ranibizumab injections. Conclusion: Best-corrected visual acuity gained at the end of the RADIANCE trial was sustained over additional 36 months of follow-up. Few patients required further treatment and no new safety concerns were observed.
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Guichard MM, Peters G, Tuerksever C, Pruente C, Hatz K. Outcome Predictors of SD-OCT-Driven Intravitreal Ranibizumab in Choroidal Neovascularization due to Myopia. Ophthalmologica 2019; 243:154-162. [PMID: 31387095 DOI: 10.1159/000501040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 05/20/2019] [Indexed: 01/16/2023]
Abstract
PURPOSE To analyze the efficacy and outcome predictors of SD-OCT (spectral-domain optical coherence tomography)-driven ranibizumab treatment in patients with choroidal neovascularization due to myopia (mCNV). METHODS This prospective investigator-initiated study includes 20 patients with treatment-naïve mCNV. Evaluation included best-corrected visual acuity (BCVA), morphological SD-OCT parameters, and treatment frequency. RESULTS From baseline to month 12, BCVA improved from 58.5 ± 16.9 to 66.1 ± 14.9 letters. Central retinal thickness (CRT) significantly decreased, and qualitative SD-OCT parameters improved. Better baseline visual acuity (VA), lower spherical equivalent, better inner/outer segment line and external limiting membrane integrity showed a significant positive effect on BCVA outcome. Less fluctuation in CRT (worst minus best CRT) indicated better BCVA at 12 months. No serious adverse events occurred. CONCLUSIONS SD-OCT-guided intravitreal ranibizumab treatment in mCNV was efficient and safe. We determined useful predictive factors in regard to VA outcome after 12 months.
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Affiliation(s)
| | | | | | - Christian Pruente
- Department of Ophthalmology, University of Basel, Basel, Switzerland.,Department of Ophthalmology, Kantonsspital Liestal, Liestal, Switzerland
| | - Katja Hatz
- Vista Klinik, Binningen, Switzerland, .,Department of Ophthalmology, University of Basel, Basel, Switzerland,
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Abstract
BACKGROUND Myopic choroidal neovascularization (CNV) is a common cause of central visual loss in patients with high myopia, and the most common form of CNV in younger individuals. Pharmacologic therapy is the current mainstay of treatment of these patients. METHODS Review of pharmacological treatment options for myopic CNV, which primarily involves intravitreal administration of anti-vascular endothelial growth factor (anti-VEGF) agents. RESULTS At this time, anti-VEGF therapy agents are the first-line therapy in these patients. Comparative trials have not identified any major differences in treatment outcomes between aflibercept, bevacizumab, and ranibizumab. Only ranibizumab is approved for this indication in the US. Best visual outcomes are associated with younger age, smaller lesion size, and absence of chorioretinal atrophy. CONCLUSION Anti-VEGF therapy is generally very effective in the treatment of myopic CNV.
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Affiliation(s)
- Hacer Isildak
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Stephen G Schwartz
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Harry W Flynn
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States
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Ng DSC, Lai TYY, Cheung CMG, Ohno-Matsui K. Anti-Vascular Endothelial Growth Factor Therapy for Myopic Choroidal Neovascularization. Asia Pac J Ophthalmol (Phila) 2017; 6:554-560. [PMID: 29057641 DOI: 10.22608/apo.2017308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Myopic choroidal neovascularization (CNV) is one of the most vision-impairing complications in patients with pathologic myopia. It is also one of the most frequently encountered non.age-related macular degeneration causes of CNV and affects young patients in the working age group. Fluorescein angiography (FA) and spectral domain optical coherence tomography (OCT) are generally indicated to confirm the diagnosis of active myopic CNV before initiation of treatment. Without treatment, natural history studies have shown that the vision outcome can be very poor. More recently, a number of retrospective, prospective and phase 3, multicenter, randomized controlled trials have established the safety and efficacy of intravitreal anti.vascular endothelial growth factor (VEGF) agents for the treatment of myopic CNV. Long-term follow-up studies have found that some of the initial vision gained after intravitreal anti-VEGF therapy may not be maintained, owing to the presence and progression of chorioretinal atrophy (CRA) adjacent to the CNV. Further research on clinical and imaging characteristics may elucidate the prognostic factors that are crucial to optimizing the treatment and prevention of visual impairment associated with myopic CNV.
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Affiliation(s)
- Danny S C Ng
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Timothy Y Y Lai
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong
- 2010 Retina and Macula Centre, Hong Kong
| | - Chui Ming Gemmy Cheung
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore
- Duke NUS Medical School, National University of Singapore, Singapore
| | - Kyoko Ohno-Matsui
- Department of Ophthalmology and Visual Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Cheung CMG, Arnold JJ, Holz FG, Park KH, Lai TY, Larsen M, Mitchell P, Ohno-Matsui K, Chen SJ, Wolf S, Wong TY. Myopic Choroidal Neovascularization. Ophthalmology 2017; 124:1690-1711. [DOI: 10.1016/j.ophtha.2017.04.028] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 04/03/2017] [Accepted: 04/24/2017] [Indexed: 02/07/2023] Open
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Teo KYC, Ng WY, Lee SY, Cheung CMG. Management of Myopic Choroidal Neovascularization: Focus on Anti-VEGF Therapy. Drugs 2016; 76:1119-33. [PMID: 27364753 DOI: 10.1007/s40265-016-0605-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Myopic choroidal neovascularization (mCNV) is the second most common form of CNV after age-related macular degeneration (AMD). It is a sight-threatening complication of pathologic myopia (PM) and often affects patients in their working years causing significant impact on quality of life. Previous therapies such as photodynamic therapy with verteporfin have shown limited success. Due to the similarities in pathogenesis of mCNV and AMD CNV, anti-vascular endothelial growth factor therapy (anti-VEGF), which has so far been the mainstay of treatment for AMD CNV, has been shown to be effective in the treatment of mCNV and has become the first-line treatment of choice. This article aims to examine briefly the epidemiology and pathophysiology of mCNV, as well as review the evidence for efficacy, safety, and clinical use of anti-VEGF treatment for mCNV.
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Affiliation(s)
- Kelvin Yi Chong Teo
- Singapore Eye Research Institute, Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore, 168751, Singapore
| | - Wei Yan Ng
- Singapore Eye Research Institute, Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore, 168751, Singapore
| | - Shu Yen Lee
- Singapore Eye Research Institute, Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore, 168751, Singapore
- Duke-NUS Graduate Medical School, Singapore, Singapore
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Chui Ming Gemmy Cheung
- Singapore Eye Research Institute, Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore, 168751, Singapore.
- Duke-NUS Graduate Medical School, Singapore, Singapore.
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
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Munk MR, Rückert R, Zinkernagel M, Ebneter A, Wolf S. The role of anti-VEGF agents in myopic choroidal neovascularization: Current standards and future outlook. Expert Opin Biol Ther 2016; 16:477-87. [PMID: 26666589 DOI: 10.1517/14712598.2016.1132696] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION The global prevalence of pathologic myopia is 0.9-3.1%, and visual impairment is found in 0.1-0.5% of European and 0.2-1.4% of Asian studies. Myopic choroidal neovascularization (mCNV) affects 5.2-11.3% of pathologic myopia patients and is a leading cause of vision impairment in the working-age population. Characteristic morphological changes and visual-acuity decrease are diagnostic features. Vascular-Endothelial-Growth-Factor (VEGF) has been identified as a trigger for pathologic neovascularization in these highly myopic patients. AREAS COVERED We cover the epidemiology, pathology and diagnostic aspects of mCNV. The history of therapeutic interventions is described, followed by an overview of current standard-of-care (SOC)-blocking VEGF using bevacizumab (off-label), ranibizumab or aflibercept and improving vision up to 13.5-14.4 letters. Despite good efficacy, an unmet medical need remains. We summarize ongoing and future developments of new drugs to treat or potentially cure mCNV. EXPERT OPINION mCNV is a major global health concern. Early detection and treatment is key for a satisfying outcome. The current SOC, VEGF inhibitors, affords good therapeutic efficacy and reasonable disease stabilization with few intravitreal treatments per year. However, the long-term prognosis is still unsatisfactory, and side-effects like chorioretinal atrophy development are of concern. Therefore, efforts should be intensified to develop more effective therapies.
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Affiliation(s)
- Marion R Munk
- a Ophthalmology , Inselspital, University Hospital Bern , Bern , Switzerland.,b Feinberg School of Medicine , Northwestern University , Chicago , IL , USA
| | - Rene Rückert
- c Eyegnos Ophthalmology Consulting , Bern , Switzerland
| | - Martin Zinkernagel
- a Ophthalmology , Inselspital, University Hospital Bern , Bern , Switzerland
| | - Andreas Ebneter
- a Ophthalmology , Inselspital, University Hospital Bern , Bern , Switzerland
| | - Sebastian Wolf
- a Ophthalmology , Inselspital, University Hospital Bern , Bern , Switzerland
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Understanding the Determinants of Myopic Choroidal Neovascularization and Response to Treatment. Eur J Ophthalmol 2016; 26:511-516. [PMID: 27515571 DOI: 10.5301/ejo.5000839] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2016] [Indexed: 12/15/2022]
Abstract
Purpose The pathophysiologic pathways that govern the development of choroidal neovascularization (CNV) are complex. Patchy atrophy and lacquer cracks are known to be major anatomic risk factors for the development of myopic CNV, but they are not alone and much remains to be understood about other factors that influence development. In addition, a greater understanding of the modifiable and nonmodifiable factors that influence outcome, resolution, and recurrence after intravitreal injection of anti-vascular endothelial growth factor (VEGF) could lead to more personalized treatment algorithms that integrate parameters other than the presence of CNV itself and could help improve clinical outcomes and reduce recurrence. Methods We reviewed recently published data on risk factors for CNV and predictors of response to anti-VEGF treatments. In particular, data pertaining to age, sex, genetic predisposition, baseline visual acuity, axial length, staphyloma, lacquer cracks, atrophic lesions, choroidal thickness or choroidal thinning, characteristics of CNV such as duration, localization, and size of CNV, and treatment considerations such as choice of treatment, loading doses, and combination treatments were reviewed. Results Our analysis showed that the body of evidence is incomplete. Conclusions Additional studies are required to identify high-risk patients and to develop personalized therapeutic approaches.
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Hashemi S, Faramarzi MA, Ghasemi Falavarjani K, Abdollahi M. Bevacizumab for choroidal neovascularization secondary to age-related macular degeneration and pathological myopia. Expert Opin Biol Ther 2014; 14:1837-48. [DOI: 10.1517/14712598.2014.967210] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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LONG-TERM FUNCTIONAL AND MORPHOLOGIC RETINAL CHANGES AFTER RANIBIZUMAB AND PHOTODYNAMIC THERAPY IN MYOPIC CHOROIDAL NEOVASCULARIZATION. Retina 2014; 34:2053-62. [DOI: 10.1097/iae.0000000000000201] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Teo K, Cheung CMG. Choroidal neovascularization secondary to pathological myopia. World J Ophthalmol 2014; 4:35-46. [DOI: 10.5318/wjo.v4.i3.35] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 06/30/2014] [Accepted: 07/29/2014] [Indexed: 02/06/2023] Open
Abstract
Myopic choroidal neovascularization (mCNV), one of the complications of pathological myopia, is also one of the leading causes of visual impairment worldwide. The socioeconomic impact of mCNV in Asian countries is particularly significant due to the rising incidence of pathological myopia. There have been major advances in the treatment of mCNV in the past few years. Previous treatment modalities, such as thermal laser photocoagulation and photodynamic therapy, aimed to prevent vision loss; however, newer modalities such as intravitreal anti-vascular endothelial growth factor (VEGF) agents have been shown to successfully restore vision in many patients. Challenges remain as long term safety and efficacy of anti-VEGF agents are unknown. This article aims to provide a review of the literature of the epidemiology, progression, clinical course and treatment modalities as well as areas of future developments related to myopic CNV.
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Forty-two-month outcome of intravitreal bevacizumab in myopic choroidal neovascularization. Graefes Arch Clin Exp Ophthalmol 2014; 253:511-7. [PMID: 25016478 DOI: 10.1007/s00417-014-2721-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 06/30/2014] [Indexed: 10/25/2022] Open
Abstract
PURPOSE To evaluate the long-term efficacy of bevacizumab in the treatment of choroidal neovascularization (CNV) secondary to pathological myopia. METHODS In this retrospective single-center non-comparative study the medical records of 29 eyes from 29 patients with naïve CNV secondary to high myopia and at least 42 months of follow up were reviewed. All eyes received a loading dose of one intravitreal injection per month for two consecutive months and were retreated on an as-needed basis during the course of follow up. The main outcome measures were post-treatment ETDRS best-corrected visual acuity (BCVA) and visual stabilization over time. Stepwise linear regression analysis was performed to identify prognostic factors for visual acuity gain and final visual acuity outcome at 42 months. RESULTS At 42 months of follow-up bevacizumab was associated with the maintenance of significant benefits in visual acuity compared to baseline. No adverse ocular or systemic effects from treatment were encountered. No statistically significant correlations were found between BCVA change and any of the quantitative variables. However, when final BCVA was taken as a dependent variable and CNV size and pre-treatment VA were included as predictors, a bivariate model was identified by stepwise regression which gave a 75 % of explained variance. CONCLUSIONS Bevacizumab treatment was found to be efficacious in the treatment of myopic CNV, resulting in stable gains in visual acuity lasting at least 42 months, without any adverse ocular or general events. Myopic CNV size was identified as a significant prognostic factor.
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Yang HS, Kim JG, Kim JT, Joe SG. Prognostic factors of eyes with naïve subfoveal myopic choroidal neovascularization after intravitreal bevacizumab. Am J Ophthalmol 2013; 156:1201-1210.e2. [PMID: 24075429 DOI: 10.1016/j.ajo.2013.08.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 07/31/2013] [Accepted: 08/01/2013] [Indexed: 01/11/2023]
Abstract
PURPOSE To determine the efficacy of 1 intravitreal bevacizumab injection followed by pro re nata (1 + PRN) injection in cases of subfoveal myopic choroidal neovascularization (CNV) and to identify CNV-recurrence-related prognostic factors. DESIGN Retrospective observational case series. METHODS In total, 103 eyes of 89 consecutive naive patients who had subfoveal myopic CNV and had been followed-up for at least 2 years were included. Of those eyes, 24 had recurrences. The remaining eyes were stable after the initial treatment. RESULTS The average patient age was 51.1 ± 15.2 years. The average follow-up duration was 44.1 ± 12.7 months. At baseline and at the 1-year, 2-year, and final visits, the average best corrected visual acuities (BCVAs) were 0.57 ± 0.45, 0.38 ± 0.51, 0.40 ± 0.52, and 0.41 ± 0.41 logMAR, respectively. The recurrence rate during follow-up was 23.3%. The BCVA improved by 0.2 logMAR after 2.7 injections in the eyes without recurrence but by only 0.08 logMAR after 6.9 injections in the eyes with recurrence. In univariate analysis, recurrence was associated with older age, more myopic refraction, thinner choroid, larger CNV lesions, and subfoveal hemorrhage at baseline. In multivariate analysis, only baseline CNV lesion size associated significantly with CNV recurrence (P = 0.002). Recurrence, baseline BCVA, choroidal thickness, and CNV size associated significantly with final BCVA (P = 0.026, <0.0001, 0.007, and 0.002, respectively). Baseline choroidal thickness, CNV size, age, and presence of lacquer cracks associated significantly with injection number (P < 0.0001, <0.0001, 0.026, and 0.035, respectively). CONCLUSIONS 1 + PRN intravitreal bevacizumab monotherapy effectively stabilized subfoveal myopic CNV. The CNV size, the baseline BCVA, and the choroidal thickness were the main prognostic factors of subfoveal myopic CNV after 1 + PRN injection of bevacizumab.
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Zhang ZY, Zhang XR, Chu RY. Effect of axial length on myopic choroidal neovascularization. Graefes Arch Clin Exp Ophthalmol 2013; 251:2269-70. [DOI: 10.1007/s00417-012-2250-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 12/18/2012] [Indexed: 12/01/2022] Open
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