1
|
Shin HJ, Costello F. Imaging the optic nerve with optical coherence tomography. Eye (Lond) 2024; 38:2365-2379. [PMID: 38961147 PMCID: PMC11306400 DOI: 10.1038/s41433-024-03165-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 07/05/2024] Open
Abstract
Optical coherence tomography (OCT) is a non-invasive imaging technology, which may be used to generate in vivo quantitative and qualitative measures of retinal structure. In terms of quantitative metrics, peripapillary retinal nerve fiber layer (pRNFL) thickness provides an indirect evaluation of axonal integrity within the optic nerve. Ganglion layer measures derived from macular scans indirectly reflect retinal ganglion cell status. Notably, ganglion layer indices are platform dependent and may include macular ganglion cell inner plexiform layer (mGCIPL), ganglion cell layer (GCL), and ganglion cell complex (GCC) analyses of thickness or volume. Interpreted together, pRNFL thickness and ganglion layer values can be used to diagnose optic neuropathies, monitor disease progression, and gauge response to therapeutic interventions for neuro-ophthalmic conditions. Qualitative assessments of the optic nerve head, using cross-sectional transverse axial, en face, and circular OCT imaging, may help distinguish papilledema from pseudopapilloedema, and identify outer retinal pathology. Innovations in OCT protocols and approaches including enhanced depth imaging (EDI), swept source (SS) techniques, and angiography (OCTA) may offer future insights regarding the potential pathogenesis of different optic neuropathies. Finally, recent developments in artificial intelligence (AI) utilizing OCT images may overcome longstanding challenges, which have plagued non-vision specialists who often struggle to perform reliable ophthalmoscopy. In this review, we aim to discuss the benefits and pitfalls of OCT, consider the practical applications of this technology in the assessment of optic neuropathies, and highlight scientific discoveries in the realm of optic nerve imaging that will ultimately change how neuro-ophthalmologists care for patients.
Collapse
Affiliation(s)
- Hyun Jin Shin
- Konkuk University School of Medicine, Chungju city, Republic of Korea
- Department of Ophthalmology, Konkuk University Medical Center, Seoul, Republic of Korea
- Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
- Institute of Biomedical Science & Technology, Konkuk University, Seoul, Republic of Korea
| | - Fiona Costello
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
- Department of Surgery, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
| |
Collapse
|
2
|
Salvetat ML, Pellegrini F, Spadea L, Salati C, Zeppieri M. Non-Arteritic Anterior Ischemic Optic Neuropathy (NA-AION): A Comprehensive Overview. Vision (Basel) 2023; 7:72. [PMID: 37987292 PMCID: PMC10661278 DOI: 10.3390/vision7040072] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/25/2023] [Accepted: 11/07/2023] [Indexed: 11/22/2023] Open
Abstract
Non-arteritic anterior ischemic optic neuropathy (NA-AION) represents one of the most important causes of blindness or severely impaired vision in middle-aged and elderly people. Unilateral optic disc edema and abrupt, painless vision loss are its defining features. It is commonly assumed that NA-AION is caused by an ischemic infarction of the optic nerve head, and, although the exact pathogenesis is still unknown, several risk factors and comorbidities associated with its development have been found. NA-AION occurs generally in patients older than 50 years who have small optic discs and vasculopathy risk factors. Even though numerous treatment options have been proposed, no available effective medical or surgical therapy or prophylactic measure for NA-AION currently exists. The purpose of present-day therapeutic strategies is therefore to identify and possibly control any underlying modifiable risk factors, aiming to prevent the development of new NA-AION episodes in the affected and fellow eye. A thorough assessment of NAION, including its history, epidemiology, etiology, pathophysiology, risk factors, associated comorbidities, clinical findings, diagnostic tests, treatment choices, prognosis, and future research, is the goal of this work.
Collapse
Affiliation(s)
- Maria Letizia Salvetat
- Department of Ophthalmology, Azienda Sanitaria Friuli Occidentale, 33170 Pordenone, Italy; (M.L.S.)
| | - Francesco Pellegrini
- Department of Ophthalmology, Azienda Sanitaria Friuli Occidentale, 33170 Pordenone, Italy; (M.L.S.)
| | - Leopoldo Spadea
- Eye Clinic, Policlinico Umberto I, “Sapienza” University of Rome, 00142 Rome, Italy
| | - Carlo Salati
- Department of Ophthalmology, University Hospital of Udine, 33100 Udine, Italy
| | - Marco Zeppieri
- Department of Ophthalmology, University Hospital of Udine, 33100 Udine, Italy
| |
Collapse
|
3
|
Salvetat ML, Pellegrini F, Spadea L, Salati C, Zeppieri M. Non-Arteritic Anterior Ischemic Optic Neuropathy (NA-AION): A Comprehensive Overview. Vision (Basel) 2023; 7:72. [DOI: : 10.3390/vision7040072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2023] Open
Abstract
Non-arteritic anterior ischemic optic neuropathy (NA-AION) represents one of the most important causes of blindness or severely impaired vision in middle-aged and elderly people. Unilateral optic disc edema and abrupt, painless vision loss are its defining features. It is commonly assumed that NA-AION is caused by an ischemic infarction of the optic nerve head, and, although the exact pathogenesis is still unknown, several risk factors and comorbidities associated with its development have been found. NA-AION occurs generally in patients older than 50 years who have small optic discs and vasculopathy risk factors. Even though numerous treatment options have been proposed, no available effective medical or surgical therapy or prophylactic measure for NA-AION currently exists. The purpose of present-day therapeutic strategies is therefore to identify and possibly control any underlying modifiable risk factors, aiming to prevent the development of new NA-AION episodes in the affected and fellow eye. A thorough assessment of NAION, including its history, epidemiology, etiology, pathophysiology, risk factors, associated comorbidities, clinical findings, diagnostic tests, treatment choices, prognosis, and future research, is the goal of this work.
Collapse
Affiliation(s)
- Maria Letizia Salvetat
- Department of Ophthalmology, Azienda Sanitaria Friuli Occidentale, 33170 Pordenone, Italy
| | - Francesco Pellegrini
- Department of Ophthalmology, Azienda Sanitaria Friuli Occidentale, 33170 Pordenone, Italy
| | - Leopoldo Spadea
- Eye Clinic, Policlinico Umberto I, “Sapienza” University of Rome, 00142 Rome, Italy
| | - Carlo Salati
- Department of Ophthalmology, University Hospital of Udine, 33100 Udine, Italy
| | - Marco Zeppieri
- Department of Ophthalmology, University Hospital of Udine, 33100 Udine, Italy
| |
Collapse
|
4
|
Zhang XJ, Tang SM, Wang YM, Zhang Y, Chan HN, Lau YH, Kam KW, Chan PP, Ip P, Young AL, Tham CC, Chen LJ, Pang CP, Yam JC. Increase in Bruch's membrane opening minimum rim width with age in healthy children: the Hong Kong Children Eye Study. Br J Ophthalmol 2023; 107:1344-1349. [PMID: 35649695 DOI: 10.1136/bjophthalmol-2021-320524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 05/18/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND/AIMS To identify normative values and determinants for Bruch's membrane opening (BMO) and the minimum rim width of BMO (BMO-MRW) among healthy children. METHODS A population-based cross-sectional study from the Hong Kong Children Eye Study, recruiting 1, 226 children aged 6-8 years. Spherical refractive error, axial length (AL), body mass index and intraocular pressure (IOP) were measured. The optic nerve head and the peripapillary retinal nerve fibre layer (p-RNFL) were imaged through spectral domain-optical coherence tomography, using 24 equally spaced radial B-scans. Global and sectoral BMO-MRW values, BMO area and fovea-to-BMO (FoBMO) angle were calculated. Multiple regression analysis was performed to define the determinants of BMO area and BMO-MRW in relation to demographic and ocular parameters. RESULTS The mean values for global BMO-MRW, BMO area and FoBMO angle among children were 345.76±54.08 µm, 2.34±0.49 mm2 and -5.45±4.36°, respectively. Global and sectoral values for BMO-MRW correlated with p-RNFL thickness (r=0.11-0.35, p<0.001). After adjusting for demographic and ocular parameters, global BMO-MRW increased with age (β=6.4, p<0.001) and greater global p-RNFL thickness (β=1.41, p<0.001), but decreased with larger BMO area (β=-47.46, p<0.001) and higher IOP (β=-1.73, p<0.001). Global BMO-MRW did not associate with AL, whereas both BMO area and FoBMO angle associated with AL (β=0.04, p=0.02 and β=0.31, p=0.03, respectively), but not with age. CONCLUSION We observed that BMO-MRW increases with age among children. Our results provide normative values and the determinants of BMO parameters among Chinese children.
Collapse
Affiliation(s)
- Xiu Juan Zhang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Shu Min Tang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fujian, China
| | - Yu Meng Wang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yuzhou Zhang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Hei-Nga Chan
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yi Han Lau
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ka Wai Kam
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong SAR, China
| | - Poemen P Chan
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Hong Kong Eye Hospital, Kowloon, Hong Kong SAR
| | - Patrick Ip
- Department of Paediatrics and Adolescent Medicine, LKS Faculty of Medicine, University of Hong Kong, Hong Kong SAR
| | - Alvin L Young
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong SAR, China
| | - Clement C Tham
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong SAR, China
- Hong Kong Eye Hospital, Kowloon, Hong Kong SAR
- Department of Ophthalmology, Hong Kong Children Hospital, Hong Kong SAR, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Li Jia Chen
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong SAR, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chi Pui Pang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jason C Yam
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong SAR, China
- Hong Kong Eye Hospital, Kowloon, Hong Kong SAR
- Department of Ophthalmology, Hong Kong Children Hospital, Hong Kong SAR, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
| |
Collapse
|
5
|
Gutiérrez Martín LC. Update on the diagnosis and treatment of normotensive glaucoma. ARCHIVOS DE LA SOCIEDAD ESPANOLA DE OFTALMOLOGIA 2023:S2173-5794(23)00078-6. [PMID: 37209720 DOI: 10.1016/j.oftale.2023.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 04/19/2023] [Indexed: 05/22/2023]
Abstract
The increased Knowledge of the multifactorial origin of glaucoma, and especially the vascular involvement in normotensive glaucoma, can be seen in the high number of publications on this subject in recent years, which obliges us to review its diagnosis and treatment.
Collapse
Affiliation(s)
- L C Gutiérrez Martín
- Hospital Universitario Puerta de Hierro-Majadahonda, Majadahonda, Madrid, Spain.
| |
Collapse
|
6
|
Jafarizadeh A, Homaie M, Abdollahi M, Niyousha M. Time course study of optical coherence tomography angiography in patients with methanol induced optic neuropathy. BMC Ophthalmol 2023; 23:178. [PMID: 37098467 PMCID: PMC10126549 DOI: 10.1186/s12886-023-02937-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 04/21/2023] [Indexed: 04/27/2023] Open
Abstract
INTRODUCTION In countries where alcoholic beverages are legally prohibited, methanol toxicity usually occurs due to ingesting homemade alcoholic drinks. The initial ophthalmologic symptoms of methanol toxicity typically appear 6-48 h after ingestion, and the severity of symptoms varies widely from mild and painless decreased vision to no-light perception vision. METHODS This prospective study examines 20 patients with acute methanol poisoning within 10 days of use. Patients underwent ocular examinations, BCVA (Best Corrected Visual Acuity) recording, and OCTA (Optical Coherence Tomography Angiography) of the macula and optic disc. BCVA measurement and imaging were repeated one month and three months after intoxication. RESULTS There was a statistically significant reduction in superficial parafoveal vascular density (P-value = 0.026), inner retinal thickness (P-value = 0.022), RNFL (Retinal Nerve Fiber Layer) thickness (P-value = 0.031), and an increase in cup to disc ratio (P-value < 0.001), and central visual acuity (P-value = 0.002) in this time course. However, there was no statistically significant difference in FAZ (Foveal Avascular Zone) area (P-value = 0.309), FAZ perimeter (P-value = 0.504), FD-300 (Foveal density, vascular density within a 300 μm wide region of the FAZ) (P-value = 0.541), superficial vascular density (P-value = 0.187), deep foveal vascular density (P-value = 0.889), deep parafoveal vascular density (P-value = 0.830), choroidal flow area (P-value = 0.464), total retinal thickness (P-value = 0.597), outer retinal thickness (P-value = 0.067), optic disc whole image vascular density (P-value = 0.146), vascular density inside the disc (P-value = 0.864), or peripapillary vascular density (P-value = 0.680) at different times. CONCLUSION Over time, methanol poisoning can cause changes in retinal layers thickness, vasculature, and optic nerve head. The most important changes include cupping of the optic nerve head, reduction in RNFL thickness, and inner retinal thickness.
Collapse
Affiliation(s)
- Ali Jafarizadeh
- Nikookari Eye Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mina Homaie
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mirsaeed Abdollahi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohamadreza Niyousha
- Department of Ophthalmology, Nikookari Eye Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| |
Collapse
|
7
|
Issa M, Donaldson L, Margolin E. Incidence of giant cell arteritis mimicking non-arteritic anterior optic neuropathy. J Neurol Sci 2023; 449:120661. [PMID: 37126919 DOI: 10.1016/j.jns.2023.120661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 03/03/2023] [Accepted: 04/18/2023] [Indexed: 05/03/2023]
Abstract
PURPOSE Giant cell arteritis (GCA) involving ophthalmic circulation often manifests as anterior ischemic optic neuropathy (AAION), presenting with severe vision loss and pallid optic disc edema. Non-arteritic anterior ischemic optic neuropathy (NAION) classically presents with segmental optic disc edema and corresponding altitudinal visual field defect (VFD) with small cup-to-disc ratio in the fellow eye. Differentiating these two entities is critical as GCA requires immediate treatment to prevent vision loss in the fellow eye. This study investigated how often GCA mimics NAION at presentation. METHODS Retrospective chart review of patients with temporal artery biopsy (TAB) positive GCA with ocular manifestations seen at a tertiary neuro-ophthalmology practice between 2015 and 2020. Patients presenting with segmental non-pallid optic disc swelling and corresponding altitudinal VFD mimicking NAION were identified. RESULTS The clinical presentation of 7.1% (3/42) of patients with TAB-positive GCA mimicked NAION. Two of three patients had cup-to-disc ratio of <0.3 in the fellow eye. Two patients were women, mean age was 67.3 ± 6.5 years, and mean presenting visual acuity was 0.45 ± 0.48 LogMAR. Two patients had a normal temporal artery ultrasound. Two of three patients had at least one systemic symptom of GCA at presentation and all had elevation of one or both inflammatory markers. CONCLUSIONS There should be high index of suspicion for GCA, even in patients highly suspected to have NAION. Inflammatory markers must be checked in every patient with presumed NAION and TAB performed if one or both are elevated to avoid missing GCA.
Collapse
Affiliation(s)
- Mariam Issa
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Laura Donaldson
- Department of Ophthalmology, McMaster University, Hamilton, Ontario, Canada
| | - Edward Margolin
- Department of Ophthalmology and Vision Sciences, University of Toronto, Canada; Department of Neurology, University of Toronto, Canada.
| |
Collapse
|
8
|
Kruszewski AM, Tamhankar MA. Ophthalmic Manifestations of Giant Cell Arteritis. Int Ophthalmol Clin 2023; 63:13-23. [PMID: 36963824 DOI: 10.1097/iio.0000000000000465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
|
9
|
Dalvin LA, Deufel CL, Corbin KS, Petersen IA, Olsen TW, Roddy GW. Postradiation Optic Atrophy Is Associated With Intraocular Pressure and May Manifest With Neuroretinal Rim Thinning. J Neuroophthalmol 2022; 42:e159-e172. [PMID: 34812759 PMCID: PMC9358970 DOI: 10.1097/wno.0000000000001465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND To determine risk factors for postradiation optic atrophy (PROA) after plaque radiotherapy for uveal melanoma. METHODS A single center, retrospective cohort study of patients diagnosed with uveal melanoma involving choroid and/or ciliary body treated with plaque between January 1, 2008, and December 31, 2016. Outcomes included development of PROA with pallor alone or with concomitant neuroretinal rim thinning (NRT). Cox regression analysis was performed to identify risk factors for PROA. RESULTS Of 78 plaque-irradiated patients, PROA developed in 41 (53%), with concomitant NRT in 15 (19%). Risk factors for PROA of any type included presentation with worse visual acuity (odds ratio [95% confidence interval] 5.6 [2.3-14.1], P < 0.001), higher baseline intraocular pressure (IOP; 14 vs 16 mm Hg) (1.1 [1.0-1.2], P = 0.03), shorter tumor distance to optic disc (1.3 [1.2-1.5], P < 0.001) and foveola (1.2 [1.1-1.3], P < 0.001), subfoveal subretinal fluid (3.8 [2.0-7.1], P < 0.001), greater radiation prescription depth (1.3 [1.1-1.6], P = 0.002), dose to fovea (point dose) (1.01 [1.01-1.02], P < 0.001), and mean (1.02 [1.02-1.03], P < 0.001) and maximum dose to optic disc per 1 Gy increase (1.02 [1.01-1.03], P < 0.001). On multivariate modeling, dose to disc, baseline IOP, and subfoveal fluid remained significant. Subanalysis revealed risk factors for pallor with NRT of greater mean radiation dose to disc (1.03 [1.01-1.05], P = 0.003), higher maximum IOP (17 vs 20 mm Hg) (1.4 [1.2-1.7], P < 0.001), and subfoveal fluid (12 [2-63], P = 0.004). CONCLUSION PROA may result in NRT in addition to optic disc pallor. Risk factors for PROA included higher radiation dose to optic disc, higher baseline IOP, and subfoveal fluid. Higher maximum IOP contributed to concomitant NRT.
Collapse
Affiliation(s)
- Lauren A Dalvin
- Departments of Ophthalmology (LAD, TWO, GWR) and Medical Physics (CLD), and Radiation Oncology (KSC, IAP), Mayo Clinic, Rochester, Minnesota
| | | | | | | | | | | |
Collapse
|
10
|
Somvanshi RK, Zou S, Kadhim S, Padania S, Hsu E, Kumar U. Cannabinol modulates neuroprotection and intraocular pressure: A potential multi-target therapeutic intervention for glaucoma. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166325. [DOI: 10.1016/j.bbadis.2021.166325] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/22/2021] [Accepted: 12/09/2021] [Indexed: 12/31/2022]
|
11
|
Andrade TDS, Araújo RBD, Rocha AADN, Mello LGM, Cunha LP, Monteiro ML. Bruch Membrane Opening Minimum Rim Width and Retinal Nerve Fiber Layer Helps Differentiate Compressive Optic Neuropathy From Glaucoma. Am J Ophthalmol 2022; 234:156-165. [PMID: 34453885 DOI: 10.1016/j.ajo.2021.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 12/15/2022]
Abstract
PURPOSE To compare optical coherence tomography-measured Bruch membrane opening minimum rim width (MRW), peripapillary retinal nerve fiber layer (pRNFL) measurements, and MRW:pRNFL ratios in eyes with compressive optic neuropathy (CON) and glaucoma and controls, and evaluate the ability of these parameters to differentiate CON from glaucoma. DESIGN Prospective, cross-sectional study. METHODS Setting: Single-center tertiary hospital and outpatient clinic. PATIENT POPULATION One hundred fifteen eyes of 77 participants, 34 with CON from chiasmal lesions, 21 with glaucoma, and 22 healthy controls. OBSERVATION PROCEDURES Optical coherence tomography-measured MRW, pRNFL, and MRW:pRNFL ratios for each optic disc sector and global average. MAIN OUTCOME MEASURES MRW, pRNFL, and MRW:pRNFL ratios compared using generalized estimated equations. Area under the receiver operating characteristic curve and positive and negative likelihood ratios were calculated. RESULTS MRW and pRNFL measurements were significantly reduced in CON and glaucoma compared with controls. In glaucoma, MRW was thinner than in CON in the global, inferotemporal, superonasal, inferonasal, and vertical average measurements, but a significant overlap was observed in many parameters. MRW:pRNFL ratios increased the ability to discriminate between CON and glaucoma, as shown by the high area under the receiver operating characteristic curve, high positive likelihood ratios, and low negative likelihood ratios, especially in the nasal disc sector and the nasal and temporal average. CONCLUSIONS MRW measurements alone cannot reliably distinguish CON from glaucoma, but the combination of MRW, pRNFL, and MRW:pRNFL ratios significantly improves accuracy. When comparing the 2 conditions, MRW:pRNFL ratios yielded higher area under the receiver operating characteristic curve and positive and negative likelihood ratios, suggesting this parameter may be helpful in clinical practice.
Collapse
|
12
|
Kalloniatis M, Wang H, Katalinic P, Ly A, Apel W, Nivison-Smith L, Kalloniatis KF. Ocular ischaemia: signs, symptoms, and clinical considerations for primary eye care practitioners. Clin Exp Optom 2022; 105:117-134. [PMID: 34982952 DOI: 10.1080/08164622.2021.1999771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Ischaemic stroke is a major disease burden as well as a leading cause of death. Early signs of ischaemic stroke can manifest in the eye, placing primary eyecare practitioners in an important position to identify patients at risk of ischaemic stroke and initiate suitable referral pathways. The vascular supply to the brain is reviewed with reference to vision including the various retinal signs and ocular symptoms associated with transient ischaemic attacks and ischaemic stroke. Using a range of clinical cases, the diverse clinical presentations of retinal embolic events, as well as other forms of vascular occlusion, are highlighted and the underlying pathophysiology is discussed. A succinct scheme for the assessment and management of ischaemic events for primary eye care practitioners is provided.
Collapse
Affiliation(s)
- Michael Kalloniatis
- Centre for Eye Health, the University of New South Wales, Sydney, Australia.,School of Optometry and Vision Science, The University of New South Wales, Sydney, Australia
| | - Henrietta Wang
- Centre for Eye Health, the University of New South Wales, Sydney, Australia.,School of Optometry and Vision Science, The University of New South Wales, Sydney, Australia
| | - Paula Katalinic
- Centre for Eye Health, the University of New South Wales, Sydney, Australia.,School of Optometry and Vision Science, The University of New South Wales, Sydney, Australia
| | - Angelica Ly
- Centre for Eye Health, the University of New South Wales, Sydney, Australia.,School of Optometry and Vision Science, The University of New South Wales, Sydney, Australia
| | - Warren Apel
- Centre for Eye Health, the University of New South Wales, Sydney, Australia.,The Eye Health Centre, Aspley, Australia
| | - Lisa Nivison-Smith
- Centre for Eye Health, the University of New South Wales, Sydney, Australia.,School of Optometry and Vision Science, The University of New South Wales, Sydney, Australia
| | | |
Collapse
|
13
|
Waisberg E, Micieli JA. Neuro-Ophthalmological Optic Nerve Cupping: An Overview. Eye Brain 2021; 13:255-268. [PMID: 34934377 PMCID: PMC8684388 DOI: 10.2147/eb.s272343] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 12/02/2021] [Indexed: 11/23/2022] Open
Abstract
Optic nerve cupping or enlargement of the cup-to-disc ratio is widely recognized as a feature of glaucoma, however it may also occur in non-glaucomatous optic neuropathies. The most well-recognized non-glaucomatous optic neuropathies that cause cupping include compressive optic neuropathies, arteritic anterior ischemic optic neuropathies, hereditary optic neuropathies, and optic neuritis. Cupping is thought to consist of two main components: prelaminar and laminar thinning. The former is a shallow form of cupping and related to loss of retinal ganglion cells, whereas the latter involves damage to the lamina cribrosa and peripapillary scleral connective tissue. Differentiating glaucomatous and non-glaucomatous optic nerve cupping remains challenging even for experienced observers. Classically, the optic nerve in non-glaucomatous causes has pallor of the neuroretinal rim, but the optic nerve should not be examined in isolation. The patient’s medical history, history of presenting illness, visual function (visual acuity, color vision and visual field testing) and ocular examination also need to be considered. Ancillary testing such as optical coherence tomography of the retinal nerve fiber layer and ganglion cell layer-inner plexiform layer may also be helpful in localizing the disease. In this review, we review the non-glaucomatous causes of cupping and provide an approach to evaluating a patient that presents with an enlarged cup-to-disc ratio.
Collapse
Affiliation(s)
- Ethan Waisberg
- UCD School of Medicine, University College Dublin, Belfield, Dublin, 4, Ireland
| | - Jonathan A Micieli
- Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ontario, Canada.,Kensington Vision and Research Centre, Toronto, Ontario, Canada
| |
Collapse
|
14
|
Donaldson L, Margolin E. Visual fields and optical coherence tomography (OCT) in neuro-ophthalmology: Structure-function correlation. J Neurol Sci 2021; 429:118064. [PMID: 34488042 DOI: 10.1016/j.jns.2021.118064] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/30/2021] [Accepted: 08/30/2021] [Indexed: 10/20/2022]
Abstract
Visual field (VF) testing is an essential component of the neurological examination. The differential diagnosis of VF defects depends on relating this measure of afferent visual function to the structure of the visual pathway and optical coherence tomography (OCT) is an invaluable tool for detailed structural evaluation of the optic nerve and retina. This review describes the ways in which interpretation of VF and OCT can be used together to increase the accuracy of the localization of lesions along the visual pathway. Lesions of the anterior visual pathway (originating in ganglion cells or nerve fibre layer of the retina or optic nerve) will typically produce defects that respect the horizontal midline, reflecting the arcuate path of the ganglion cell axons as they travel to the optic nerve. OCT of peripapillary retinal nerve fibre layer and ganglion cell complex (GCC) will typically demonstrate irreversible thinning in compressive and demyelinating lesions affecting anterior visual pathway. Chiasmal lesions produce highly localizable VF defects (junctional scotoma and bitemporal hemianopia) which correspond to the thinning of nasal portion of GCC. Lesions of the optic tract result in incongruous homonymous hemianopia on VF with corresponding hemianopic thinning on GCC developing within months. Lesions affecting optic radiations usually produce more congruous homonymous VF defects and can also produce homonymous thinning on GCC, however, this takes much longer to develop as trans-synaptic degeneration at the lateral geniculate body must occur.
Collapse
Affiliation(s)
- Laura Donaldson
- University of Toronto, Faculty of Medicine, Department of Ophthalmology and Vision Sciences, Toronto, Ontario, Canada
| | - Edward Margolin
- University of Toronto, Faculty of Medicine, Department of Medicine, Division of Neurology, Toronto, Ontario, Canada.
| |
Collapse
|
15
|
Hassanpoor N, Niyousha M. Severe Optic Disc Cupping Following the Methanol Toxicity in a 20-Year-old Man: A Case Report. IRANIAN JOURNAL OF MEDICAL SCIENCES 2021; 46:395-398. [PMID: 34539014 PMCID: PMC8438338 DOI: 10.30476/ijms.2021.88370.1914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/19/2021] [Accepted: 03/13/2021] [Indexed: 11/23/2022]
Abstract
In April 2018, a 20-year-old man with a history of methanol intoxication from an alcoholic drink two years ago, when he was 18 years old, was referred to Nikookari Eye Hospital in Tabriz, Iran.
He was admitted to emergency service and underwent eight hours of hemodialysis at the time of poisoning. His past medical history was negative, and he did not take any medication after discharge.
The patient had a driving license and never experienced any visual problems before. At presentation, his visual acuity was 160/200 in both eyes with the main complaint of visual field deterioration.
Other neurologic exams and brain magnetic resonance imaging (MRI) were reported normal by a neurologist. Optic disc cupping was near total in both eyes with a very narrow remaining rim.
Optic disc cupping was very similar to glaucomatous cupping. Intraocular pressure was checked several times via Goldmann tonometry and was 13 mmHg.
There was no history of refractive surgery leading to thin cornea. Based on this case, methanol poisoning can mimic glaucomatous optic disc cupping.
This is the first case report of methanol toxicity-related optic disc cupping from Iran.
Collapse
Affiliation(s)
- Narges Hassanpoor
- Department of Ophthalmology, School of Medicine, University of Medical Sciences, Tabriz, Iran
| | - Mohamadreza Niyousha
- Department of Ophthalmology, School of Medicine, University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
16
|
Giordano M, Montorio D, Concilio M, Morra VB, Cennamo G. Peripapillary vascular density in resolved non-arteritic anterior ischemic optic neuropathy: colocalization between structural and vascular parameters. Neurol Sci 2021; 42:4723-4725. [PMID: 34145480 DOI: 10.1007/s10072-021-05378-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 06/03/2021] [Indexed: 10/21/2022]
Abstract
INTRODUCTION/AIMS Non-arteritic anterior ischemic optic neuropathy (NAION) is an acute infarction of the prelaminar anterior optic disc, resulting from the occlusion of posterior ciliary arteries. Here, we evaluated the correlation between structural and vascular features in a case of resolved NAION. METHODS Observational case report. RESULTS A 50-year-old male patient was referred at an Eye clinic due to an altitudinal visual field defect in the left eye, occurred 9 months before. Fundus examination was unremarkable, while structural SD-OCT reveals retinal nerve fiber layer (RNFL), ganglion cell complex (GCC) thinning associated with reduction of peripapillary vascular density at OCT Angiography. DISCUSSION We found a precise spatial correlation among RNFL and GCC thinning, peripapillary vascular reduction and visual field defects. This case demonstrates that OCTA represents a new, valid and non-invasive imaging technique in the diagnosis and follow-up of NAION, even after the resolution of the acute phase, in the absence of clinical signs at fundus examination.
Collapse
Affiliation(s)
- Mariapaola Giordano
- Department of Neurosciences, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy
| | - Daniela Montorio
- Department of Neurosciences, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy
| | - Marina Concilio
- Department of Neurosciences, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy
| | - Vincenzo Brescia Morra
- Department of Neurosciences, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy
| | - Gilda Cennamo
- Department of Public Health, University of Naples Federico II, Via S. Pansini 5, 80133, Naples, Italy.
| |
Collapse
|
17
|
Abri Aghdam K, Aghajani A, Razi-Khosroshahi M, Soltan Sanjari M, Chaibakhsh S, Falavarjani KG. Optical Coherence Tomography Angiography and Structural Analyses of the Pale Optic Discs: Is It Possible to Differentiate the Cause? Curr Eye Res 2021; 46:1876-1885. [PMID: 33980086 DOI: 10.1080/02713683.2021.1929331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Introduction: To compare the optic nerve head (ONH) structure and microvasculature in patients with optic atrophy due to non-arteritic anterior ischemic optic neuropathy (NAION), compressive optic neuropathy (CON), methanol-induced optic neuropathy (MION), and traumatic optic neuropathy (TON) using optical coherence tomography angiography.Methods: In this comparative, cross-sectional study, 32 eyes with NAION, 18 eyes with CON, 32 eyes with MION, 23 eyes with TON, and 55 normal eyes were enrolled. Radial peripapillary capillary (RPC) vessel density, peripapillary retinal nerve fiber layer (RNFL) thickness, disc area, cup volume, and cup/disc area ratio were obtained using the RTVue XR Avanti system (Optovue Inc., Fremont, CA, USA).Results: RPC vessel density and peripapillary RNFL thickness in all patients were significantly lower than normal subjects. A positive correlation was found between the RPC vessel density and peripapillary RNFL thickness in normal subjects and all study groups. The positive correlation between the inside and outside disc RPC vessel density was only found in the NAION (r = 0.36, P = .042) and MION (r = 0.42, P = .018) groups. No significant difference was found among the groups in terms of peripapillary and inside disc vascular densities (all P > .05). Disc area and cup volume in patients with MION was larger than the values in patients with NAION (P = .018) and TON (P = .044) and normal subjects (P = .015). The discriminating features among the study groups were the larger cup volume and cup/disc area ratio in patients with MION, and lower RNFL thickness in patients with TON.Conclusions: There was a positive correlation between the RNFL thickness and peripapillary RPC vessel density regardless of the cause of optic disc pallor. Structural evaluation of the ONH seems to be a better way to differentiate the cause of optic nerve head atrophy than the microangiographic changes.
Collapse
Affiliation(s)
- Kaveh Abri Aghdam
- Eye Research Center, The Five Senses Institute, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Aghajani
- Eye Research Center, The Five Senses Institute, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Marjan Razi-Khosroshahi
- Eye Research Center, The Five Senses Institute, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Mostafa Soltan Sanjari
- Eye Research Center, The Five Senses Institute, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Samira Chaibakhsh
- Eye Research Center, The Five Senses Institute, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Khalil Ghasemi Falavarjani
- Eye Research Center, The Five Senses Institute, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran.,Stem Cell and Regenerative Medicine Research Center, Iran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
18
|
Abstract
Ischaemic optic neuropathy (ION) is a major cause of blindness. The clinical approach and management is a matter of debate for the treating neurologist and the ophthalmologist. Of the two broad varieties namely the posterior (PION) and anterior ischaemic optic neuropathy (AION), the arteritic variety of the AION (AAION) is usually due to giant cell arteritis. Giant cell arteritis may only present with visual loss in up to 25% of cases. AAION is a neuro-ophthalmic emergency. Early recognition and differentiation from AAION is imperative in order to prevent further devastating visual loss. A literature search was conducted on pubmed using key words as AAION, arteritic anterior ischaemic optic neuropathy, giant cell arteritis (GCA) and articles from the year 2000 till date were included. In any case very few reviews are available on AAION. The literature search on pubmed provided holistic overview about this clinical significant entity and the same is compiled in this review. Moreover the histopathologic features of a temporal artery biopsy have been described with its microscopic images. In any case reviews are mostly available on the Non arteritic variety of AION. This review recapitulates the diagnostic and management protocol of a patient presenting with AAION.
Collapse
Affiliation(s)
- Vidhi Bajpai
- Department of Ophthalmology, Lady Hardinge Medical College and Associated Hospitals, University of Delhi, New Delhi, India
| | - Siddharth Madan
- Department of Ophthalmology, University College of Medical Sciences and Associated GTB Hospital, University of Delhi, New Delhi, India
| | - Sarita Beri
- Department of Ophthalmology, Lady Hardinge Medical College and Associated Hospitals, University of Delhi, New Delhi, India
| |
Collapse
|
19
|
Senthil S, Nakka M, Sachdeva V, Goyal S, Sahoo N, Choudhari N. Glaucoma Mimickers: A major review of causes, diagnostic evaluation, and recommendations. Semin Ophthalmol 2021; 36:692-712. [PMID: 33689583 DOI: 10.1080/08820538.2021.1897855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Background: Glaucoma is characterized by chronic progressive optic neuropathy with corresponding visual field changes, with or without raised intraocular pressure (IOP). When diagnosing glaucoma or monitoring its progression, the examiner has to rely on the appearance of the optic disc, characteristic retinal nerve fiber layer defects, and corresponding visual field defects. However, similar changes and symptoms may be observed in several other disorders of the optic nerve and retina that may mimic glaucoma, often leading to misdiagnosis. Methods and result: The consequences of misdiagnosis not only result in improper treatment that may impact vision but also would negatively affect the overall health, psychological well-being of the patient, and may have considerable economic implications.Conclusion: The current review describes various conditions that mimic glaucoma and the features that help differentiate these conditions from glaucoma.
Collapse
Affiliation(s)
- Sirisha Senthil
- VST Glaucoma Center, L V Prasad Eye Institute, Hyderabad, India
| | - Mamata Nakka
- VST Glaucoma Center, L V Prasad Eye Institute, Hyderabad, India
| | - Virender Sachdeva
- Nimmagada Prasad Children's Eye Care Centre, GMRV Campus, L V Prasad Eye Institute, Visakhapatnam, India
| | - Shaveta Goyal
- VST Glaucoma Center, L V Prasad Eye Institute, Hyderabad, India
| | - Nibedita Sahoo
- MTC Campus, L V Prasad Eye Institute, Bhubaneswar, India
| | | |
Collapse
|
20
|
Hondur G, Sen E, Budakoglu O. Microvascular and structural alterations in the optic nerve head of advanced primary open-angle glaucoma compared with atrophic non-arteritic anterior ischemic optic neuropathy. Graefes Arch Clin Exp Ophthalmol 2021; 259:1945-1953. [PMID: 33661365 DOI: 10.1007/s00417-021-05122-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 01/27/2021] [Accepted: 02/12/2021] [Indexed: 10/22/2022] Open
Abstract
PURPOSE This cross-sectional study compared the peripapillary vessel density (VD), peripapillary retinal nerve fiber layer (RNFL) thickness, and optic nerve head (ONH) parameters between eyes with atrophic non-arteritic anterior ischemic optic neuropathy (NAION) and eyes with advanced primary open-angle glaucoma (POAG) matched for visual field mean deviation. METHODS Peripapillary VDs and RNFL thicknesses in the peripapillary region, and 4 sectors (superior, inferior, nasal, and temporal), and scanning laser ophthalmoscopy parameters of the ONH were evaluated with optical coherence tomography angiography (OCTA) among 21 atrophic NAION cases, 26 advanced POAG cases, and 30 age- and sex-matched healthy controls. RESULTS The POAG eyes had lower peripapillary VDs in all areas compared with the NAION eyes, which was most marked in the inferior and nasal sectors (p=0.005 for both). RNFL loss was similar between the 2 groups in all areas, except for a preserved thickness in the inferior sector in NAION eyes (p=0.01). Peripapillary VD demonstrated stronger correlations with global RNFL thickness in the peripapillary region in the NAION eyes compared with that of the POAG eyes (r=0.91 p<0.00001, r=0.42 p=0.03 respectively). In multivariate analysis, the peripapillary VD correlated with age and RNFL thickness in the POAG eyes while it correlated with SSI and RNFL thickness in the NAION eyes. CONCLUSIONS A tendency for a lower peripapillary VD despite similar visual field mean deviation values may infer a more prominent role of the vascular regression in POAG compared with NAION.
Collapse
Affiliation(s)
- Gozde Hondur
- Department of Ophthalmology, Ulucanlar Eye Training and Research Hospital, University of Health Sciences, Ankara, Turkey.
| | - Emine Sen
- Department of Ophthalmology, Ulucanlar Eye Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Ozlem Budakoglu
- Department of Ophthalmology, Erzincan Binali Yildirim University School of Medicine, Erzincan, Turkey
| |
Collapse
|
21
|
Simon S, Ninan J, Hissaria P. Diagnosis and management of giant cell arteritis: Major review. Clin Exp Ophthalmol 2021; 49:169-185. [PMID: 33426764 DOI: 10.1111/ceo.13897] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 12/06/2020] [Accepted: 12/13/2020] [Indexed: 12/13/2022]
Abstract
Giant cell arteritis is a medical emergency because of the high risk of irreversible blindness and cerebrovascular accidents. While elevated inflammatory markers, temporal artery biopsy and modern imaging modalities are useful diagnostic aids, thorough history taking and clinical acumen still remain key elements in establishing a timely diagnosis. Glucocorticoids are the cornerstone of treatment but are associated with high relapse rates and side effects. Targeted biologic agents may open up new treatment approaches in the future.
Collapse
Affiliation(s)
- Sumu Simon
- Department of Ophthalmology and South Australian Institute of Ophthalmology, Royal Adelaide Hospital, Adelaide, South Australia, Australia
| | - Jem Ninan
- Department of Rheumatology, Modbury Public Hospital, Modbury, South Australia, Australia
| | - Pravin Hissaria
- Department of Immunology, Royal Adelaide Hospital, Adelaide, South Australia, Australia
| |
Collapse
|
22
|
Leaney JC, Nguyen V, Miranda E, Barnett Y, Ahmad K, Wong S, Lawlor M. Bruch's Membrane Opening Minimum Rim Width Provides Objective Differentiation between Glaucoma and Nonglaucomatous Optic Neuropathies. Am J Ophthalmol 2020; 218:164-172. [PMID: 32574771 DOI: 10.1016/j.ajo.2020.05.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 05/25/2020] [Accepted: 05/25/2020] [Indexed: 11/25/2022]
Abstract
PURPOSE A challenging clinical scenario is distinguishing between normal tension glaucoma (NTG) and non-glaucomatous optic neuropathies (NGON). The key to the assessment remains identifying the presence of optic nerve head cupping. Recent optical coherence tomography (OCT) measurements now allow objective assessment of cupping by minimum rim width at Bruch's membrane opening (MRW-BMO). This study assessed the hypothesis that the MRW-BMO measurement quantifies cupping and therefore can differentiate between NTG and NGON. DESIGN Diagnostic evaluation with area under the curve. METHODS Setting: multicenter tertiary hospitals and outpatient clinics. PATIENT POPULATION 81 eyes of 81 patients were enrolled, 27 with NTG and 54 with NGON, including ischemic optic neuropathy, previous optic neuritis, and compressive and inherited optic neuropathies. All NGON patients with intraocular pressure >21 mm Hg, narrow drainage angles, or a family history of glaucoma were excluded. Observational procedure: optic disc OCT images were obtained of both the retinal nerve fiber layer thickness and the MRW-BMO. MAIN OUTCOME MEASUREMENTS the utility of the MRW-BMO in differentiating GON from NGON was assessed using the area under the curve (AUC) estimated from a logistic regression model. RESULTS The 5-fold cross-validated AUC for glaucoma versus nonglaucoma from logistic regression models using MRW-BMO values from all sectors was 0.95 (95% confidence interval: 0.86-1.00). CONCLUSIONS The measurement of MRW-BMO effectively differentiates between NTG and NGON with a high level of sensitivity and specificity. Incorporating this measurement into routine glaucoma assessment may provide a robust method of assisting clinicians to improve diagnosis and therefore treatment of optic nerve diseases.
Collapse
|
23
|
Xiao H, Liu X, Lian P, Liao LL, Zhong YM. Different damage patterns of retinal nerve fiber layer and ganglion cell-inner plexiform layer between early glaucoma and non-glaucomatous optic neuropathy. Int J Ophthalmol 2020; 13:893-901. [PMID: 32566499 DOI: 10.18240/ijo.2020.06.06] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 04/14/2020] [Indexed: 12/23/2022] Open
Abstract
AIM To compare the damage pattern of the peripapillary retinal nerve fiber layer (pRNFL) and the macular ganglion cell-inner plexiform layer (mGCIPL) between early glaucomatous and non-glaucomatous optic neuropathy (EGON and NGON). METHODS It is a cross-sectional study. Thirty-eight healthy controls, 74 EGONs and 70 NGONs with comparable average pRNFL loss were included. The NGON group included 23 eyes of optic neuritis (ON), 13 eyes of hereditary optic neuropathy (HON), 19 eyes of toxic optic neuropathy (TON) and 15 eyes of compressive neuropathy (CON). The sectoral pRNFL and mGCIPL thickness obtained by high definition optical coherence tomography were analyzed. RESULTS Compared to normal controls, the pRNFL thickness in all quadrants showed a decrease in both EGON and NGON group (P<0.001), but the average pRNFL thickness of EGON group was not different to that of NGON group (P=0.94). The inferior and superior pRNFL was thinner in EGON group compared to NGON group (P<0.001). The temporal pRNFL was thinner in NGON group compared to EGON group (P<0.001). No statistically significant difference was found in nasal pRNFL between EGON and NGON. While the nasal pRNFL was thinner in CON than other three types of NGON (P=0.01), no statistically significant difference was found in other three quadrantal pRNFL among the four types of NGON (P>0.05). The mGCIPL of EGON and NGON group were thinner than control group (P<0.001). In EGON group the severest sites of mGCIPL reduction was located at inferotemporal and inferior sectors. While, compared to EGON group, the average mGCIPL of NGON group were significantly thinner, especially in superonasal and inferonasal sectors (P<0.001). CONCLUSION The damage pattern of pRNFL and mGCIPL caused by glaucoma is distinct from other NGON such as ON, TON, HON and CON, and this characteristic damage pattern is helpful in differentiating early glaucoma from other NGON.
Collapse
Affiliation(s)
- Hui Xiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Xing Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Ping Lian
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Ling-Ling Liao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Yi-Min Zhong
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| |
Collapse
|
24
|
Lee EJ, Han JC, Park DY, Kee C. A neuroglia-based interpretation of glaucomatous neuroretinal rim thinning in the optic nerve head. Prog Retin Eye Res 2020; 77:100840. [PMID: 31982595 DOI: 10.1016/j.preteyeres.2020.100840] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/02/2020] [Accepted: 01/13/2020] [Indexed: 12/14/2022]
Abstract
Neuroretinal rim thinning (NRR) is a characteristic glaucomatous optic disc change. However, the precise mechanism of the rim thinning has not been completely elucidated. This review focuses on the structural role of the glioarchitecture in the formation of the glaucomatous NRR thinning. The NRR is a glia-framed structure, with honeycomb geometry and mechanically reinforced astrocyte processes along the transverse plane. When neural damage selectively involves the neuron and spares the glia, the gross structure of the tissue is preserved. The disorganization and loss of the glioarchitecture are the two hallmarks of optic nerve head (ONH) remodeling in glaucoma that leads to the thinning of NRR tissue upon axonal loss. This is in contrast to most non-glaucomatous optic neuropathies with optic disc pallor where hypertrophy of the glioarchitecture is associated with the seemingly absent optic disc cupping. Arteritic anterior ischemic optic neuropathy is an exception where pan-necrosis of ONH tissue leads to NRR thinning. Milder ischemia indicates selective neuronal loss that spares glia in non-arteritic anterior ischemic optic neuropathy. The biological reason is the heterogeneous glial response determined by the site, type, and severity of the injury. The neuroglial interpretation explains how the cellular changes underlie the clinical findings. Updated understandings on glial responses illustrate the mechanical, microenvironmental, and microglial modulation of activated astrocytes in glaucoma. Findings relevant to the possible mechanism of the astrocyte death in advanced glaucoma are also emerging. Ultimately, a better understanding of glaucomatous glial response may lead to glia-targeting neuroprotection in the future.
Collapse
Affiliation(s)
- Eun Jung Lee
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-Ro, Gangnam-gu, Seoul, 06351, South Korea
| | - Jong Chul Han
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-Ro, Gangnam-gu, Seoul, 06351, South Korea
| | - Do Young Park
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-Ro, Gangnam-gu, Seoul, 06351, South Korea
| | - Changwon Kee
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-Ro, Gangnam-gu, Seoul, 06351, South Korea.
| |
Collapse
|
25
|
Braga J, Soares R, Loureiro M, Ribeiro L, Meira D. Bruch's Membrane Opening Minimum Rim Width in the Differential Diagnosis of Optic Neuropathies. Neuroophthalmology 2019; 44:76-88. [PMID: 32395154 DOI: 10.1080/01658107.2019.1650075] [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: 04/23/2019] [Revised: 07/24/2019] [Accepted: 07/26/2019] [Indexed: 01/11/2023] Open
Abstract
Observing optic disc pallor during a patient's first visit frequently raises a diagnostic challenge, particularly in regards to whether the cause is due to glaucoma or another form of optic neuropathy. Bruch's membrane opening (BMO) was recently discovered as the anatomical border of the optic disc. BMO minimum rim width (BMO-MRW) seems to be a reliable representation of the neuroretinal rim. In our study, we demonstrate the ability of BMO-MRWs to differentiate between glaucomatous and non-glaucomatous. Additionally, we propose an MRW ratio which may allow discrimination of open angle glaucoma from either non-arteritic anterior ischaemic optic neuropathy or compressive optic neuropathy.
Collapse
Affiliation(s)
- Joana Braga
- Ophthalmology Department, Centro Hospitalar Vila Nova de Gaia/Espinho, EPE, Porto, Portugal
| | - Ricardo Soares
- Ophthalmology Department, Centro Hospitalar Vila Nova de Gaia/Espinho, EPE, Porto, Portugal
| | - Mónica Loureiro
- Ophthalmology Department, Centro Hospitalar Vila Nova de Gaia/Espinho, EPE, Porto, Portugal
| | - Lígia Ribeiro
- Ophthalmology Department, Centro Hospitalar Vila Nova de Gaia/Espinho, EPE, Porto, Portugal
| | - Dália Meira
- Ophthalmology Department, Centro Hospitalar Vila Nova de Gaia/Espinho, EPE, Porto, Portugal
| |
Collapse
|
26
|
Workup for Optic Atrophy. Neuroophthalmology 2019. [DOI: 10.1007/978-3-319-98455-1_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
27
|
Resch H, Mitsch C, Pereira I, Schwarzhans F, Wasserman L, Hommer A, Reitner A, Vass C. Optic nerve head morphology in primary open-angle glaucoma and nonarteritic anterior ischaemic optic neuropathy measured with spectral domain optical coherence tomography. Acta Ophthalmol 2018; 96:e1018-e1024. [PMID: 30240137 PMCID: PMC6585641 DOI: 10.1111/aos.13804] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 04/01/2018] [Indexed: 11/30/2022]
Abstract
PURPOSE Optic nerve head (ONH) parameters as well as circumpapillary retinal nerve fibre layer (RNFL) thickness values measured with two different spectral domain optical coherence tomography (SD-OCT) machines (Spectralis® and Cirrus® OCT) have been compared between two patient groups, primary open-angle glaucoma (POAG), nonarteritic anterior ischaemic optic neuropathy (NAION) and healthy controls. A comparison of the performance of the two OCT machines was made. METHODS Twenty healthy controls, 20 POAG and 20 NAION patients with comparable visual field defects were included. Comparison between groups was made using anova and post hoc t-tests. To evaluate the diagnostic power of OCT to differentiate POAG from NAION, a stepwise linear regression analysis of the rim-RNFL correlation with adjusting covariates (optic disc area and age) was performed. Based on the regression formula, the area under the receiver operator characteristic (AUROC) was calculated. RESULTS Both glaucoma and NAION patients showed significantly smaller global RNFL thickness values compared to healthy subjects in t-tests (p < 0.001), while only patients with glaucoma showed significantly smaller global ONH parameters for both devices compared to healthy subjects (p < 0.001). Correlation between global ONH parameters was highly statistically significant (r = 0.93), whereas in t-test a statistically significant difference between the two machines was detected (p < 0.001). Area under the receiver operator characteristic revealed a similarly good discrimination between glaucoma and NAION for Spectralis® (0.980) and Cirrus® OCT (0.945). CONCLUSION NAION patients have similar RNFL thickness values as do glaucomatous eyes, whereas ONH parameters in NAION eyes were similar to those seen in healthy controls. This difference might help discriminating between these two different disease conditions in a chronic disease stadium, and in this regard, none of the two OCT machines performed better.
Collapse
Affiliation(s)
- Hemma Resch
- Department of Ophthalmology and Optometry; Medical University Vienna; Vienna Austria
| | - Christoph Mitsch
- Department of Ophthalmology and Optometry; Medical University Vienna; Vienna Austria
| | - Ivania Pereira
- Center for Medical Statistics Informatics and Intelligent Systems; Section for Medical Information Management and Imaging; Medical University Vienna; Vienna Austria
| | - Florian Schwarzhans
- Center for Medical Statistics Informatics and Intelligent Systems; Section for Medical Information Management and Imaging; Medical University Vienna; Vienna Austria
| | - Lorenz Wasserman
- Department of Ophthalmology and Optometry; Medical University Vienna; Vienna Austria
| | | | - Andreas Reitner
- Department of Ophthalmology and Optometry; Medical University Vienna; Vienna Austria
| | - Clemens Vass
- Department of Ophthalmology and Optometry; Medical University Vienna; Vienna Austria
| |
Collapse
|
28
|
Fard MA, Moghimi S, Sahraian A, Ritch R. Optic nerve head cupping in glaucomatous and non-glaucomatous optic neuropathy. Br J Ophthalmol 2018; 103:374-378. [PMID: 29793928 DOI: 10.1136/bjophthalmol-2018-312161] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 04/29/2018] [Indexed: 11/04/2022]
Abstract
BACKGROUND Enlargement of optic disc cupping is seen both in glaucoma and in neurological disorders. We used enhanced depth imaging with spectral-domain optical coherence tomography to differentiate glaucoma from non-glaucomatous optic neuropathy. METHODS The optic discs were scanned in this prospective comparative study, and the lamina cribrosa (LC) thickness and anterior laminar depth (ALD) in the central, superior and inferior optic nerve head, and peripapillary choroidal thicknesses, were measured. RESULTS There were 31 eyes of 31 patients with severe glaucoma and 33 eyes of 19 patients with non-glaucomatous cupping. Eyes of 29 healthy controls were also enrolled. There was no significant difference in the cup-to-disc ratio and in the average peripapillary nerve fibre layer thickness between the glaucoma and non-glaucomatous cupping groups (p>0.99). The average peripapillary choroidal thickness was thinner in glaucoma eyes than in the control eyes after adjusting for age and axial length. Glaucomatous and non-glaucomatous eyes had greater ALD and thinner LC than the control eyes (p<0.001 for both). ALDs of glaucoma eyes were deeper than non-glaucomatous eyes (p=0.01 for central ALD) when age, axial length and peripapillary choroidal thickness were included in the linear mixed model. Prelaminar thickness and LC thickness of glaucoma eyes were not different from non-glaucomatous eyes after adjusting. CONCLUSION Deeper ALD was observed in glaucoma than non-glaucomatous cupping after adjusting for choroidal thickness.
Collapse
Affiliation(s)
- Masoud Aghsaei Fard
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Sasan Moghimi
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Sahraian
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Robert Ritch
- Einhorn Clinical Research Center, New York Eye and Ear Infirmary of Mount Sinai, New York City, New York, USA
| |
Collapse
|
29
|
Edington M, Siempis T, Montgomery D, Venkatesh P. Dolichoectasia of the internal carotid artery: a report of two cases masquerading as glaucoma. Clin Exp Optom 2018; 101:308-310. [DOI: 10.1111/cxo.12625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 07/12/2017] [Accepted: 07/17/2017] [Indexed: 11/30/2022] Open
Affiliation(s)
| | - Thomas Siempis
- Department of Ophthalmology, Glasgow Royal Infirmary, Glasgow, UK,
| | | | - Prem Venkatesh
- Department of Ophthalmology, Inverclyde Royal Hospital, Greenock, UK,
| |
Collapse
|
30
|
Lee YH, Kim KN, Heo DW, Kang TS, Lee SB, Kim CS. Difference in patterns of retinal ganglion cell damage between primary open-angle glaucoma and non-arteritic anterior ischaemic optic neuropathy. PLoS One 2017; 12:e0187093. [PMID: 29073261 PMCID: PMC5658149 DOI: 10.1371/journal.pone.0187093] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 10/15/2017] [Indexed: 11/28/2022] Open
Abstract
PURPOSE To compare the patterns of retinal ganglion cell damage between primary open-angle glaucoma (POAG) and non-arteritic anterior ischaemic optic neuropathy (NAION). METHODS In total, 35 eyes with unilateral NAION, and 70 age- and average peripapillary retinal nerve fibre layer (RNFL) thickness-matched eyes with POAG, were enrolled as disease groups; 35 unaffected fellow eyes of the NAION, and 70 age- and refractive error-matched normal subjects for the POAG, were enrolled as their control groups, respectively. The peripapillary RNFL thickness and macular ganglion cell plus inner plexiform layer (GCIPL) thickness were compared between the disease groups and their controls, and between the two disease groups. RESULTS Mean RNFL thicknesses at the 1 and 2 o'clock (superonasal) positions were thinner in NAION than in POAG (both p < 0.05). Mean RNFL thickness at 7 o'clock (inferotemporal) was thinner in POAG than in NAION (p = 0.001). Although there was no significant difference between NAION and POAG in average GCIPL thickness, all of the sectoral GCIPL thicknesses were thinner in NAION (all p < 0.05), except in the inferior and inferotemporal sectors. The ranges of the clock-hour RNFL with damage greater than the average RNFL thickness reduction, versus fellow eyes and control eyes, were 7 hours in NAION and 4 hours in POAG. CONCLUSIONS The more damaged clock-hour RNFL regions differed between NAION (1 and 2 o'clock) and POAG (7 o'clock). Most sectoral GCIPL thicknesses were thinner in NAION than in POAG.
Collapse
Affiliation(s)
- Yeon Hee Lee
- Department of Ophthalmology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Kyoung Nam Kim
- Department of Ophthalmology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Dong Won Heo
- Department of Ophthalmology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Tae Seen Kang
- Department of Ophthalmology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Sung Bok Lee
- Department of Ophthalmology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Chang-sik Kim
- Department of Ophthalmology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| |
Collapse
|
31
|
Abstract
Ischemic optic neuropathy (ION) describes a state of hypoxic injury of the optic nerve. Clinically, ION is divided into anterior and posterior forms defined by the presence or absence of optic disc swelling, respectively. It is further classified as arteritic when secondary to vasculitis, and nonarteritic when not. The site of vascular occlusion for anterior ION from giant cell arteritis is the short posterior ciliary arteries, but mechanical vascular obstruction does not play a role in most nonarteritic cases. Histologically, ION is characterized by axon and glial necrosis, edema, and a sparse mononuclear response. Like other ischemic injuries, the morphologic alternations in the nerve are time dependent. A variant of ION called cavernous degeneration (of Schnabel) features large cystic spaces filled with mucin. Several conditions can histologically mimic cavernous degeneration of the optic nerve. The scarcity of cases of ION examined histologically has contributed to an incomplete understanding of its pathogenesis.
Collapse
Affiliation(s)
| | - Curtis E Margo
- From the Departments of Ophthalmology (Drs Patel and Margo), Pathology and Molecular Biology (Dr Margo), Morsani College of Medicine, University of South Florida, Tampa
| |
Collapse
|
32
|
Hansapinyo L, Cheng ACO, Chan NCY, Chan CKM. Optic Disc and Macular Imaging in Blind Eyes from Non-glaucomatous Optic Neuropathy: A Study with Spectral-domain Optical Coherence Tomography. Neuroophthalmology 2016; 41:1-6. [PMID: 28228830 DOI: 10.1080/01658107.2016.1238487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 09/13/2016] [Accepted: 09/15/2016] [Indexed: 10/20/2022] Open
Abstract
The purpose of this study was to determine and compare the optic disc and macular thickness measurements using two spectral-domain optical coherence tomography (SD-OCT) instruments in long-standing blind eyes diagnosed with non-glaucomatous optic neuropathies (NGON). A prospective observational case-series design was used. Twelve eyes from 12 NGON patients with no light perception for at least 6 months underwent optic disc and macular imaging with Cirrus HD-OCT and Spectralis OCT. The correlation between the peripapillary retinal nerve fibre layer (PRNFL) and macular ganglion cell layer and inner plexiform layer (GCL+IPL) thicknesses, and between the duration of no light perception (NLP) and PRNFL/GCL+IPL thicknesses were determined using Spearman's correlation analysis. The mean average PRNFL thickness was 55.9 ± 4.8 µm for Cirrus HD-OCT, which was significantly thicker than that measured by Spectralis OCT (31.9 ± 7.4 µm; p < 0.001). The mean central macular thickness on Cirrus HD-OCT was normal, but there was global thinning at the other macular areas. The mean average GCL+IPL thickness on Cirrus HD-OCT was 51.8 ± 5.8 µm. There was a good correlation between average PRNFL thickness and GCL+IPL thickness (r = 0.830, p = 0.002); however, there was no significant correlation between the duration of NLP to the average PRNFL thickness (on either instruments) or GCL+IPL thickness on Cirrus HD-OCT (p > 0.7). These results show that there was residual PRNFL thickness in NGON eyes with NLP, which varied significantly between SD-OCT instruments. The values of the residual PRNFL and GCL+IPL thicknesses in blind eyes (the "floor" effect) may be useful for prognostic purposes for patients with partial optic atrophy.
Collapse
Affiliation(s)
- Linda Hansapinyo
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong; Hong Kong Eye Hospital, Kowloon, Hong Kong; Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Andy C O Cheng
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong; Hong Kong Eye Hospital, Kowloon, Hong Kong; Department of Ophthalmology, Hong Kong Sanatorium & Hospital, Hong Kong
| | - Noel C Y Chan
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong; Hong Kong Eye Hospital, Kowloon, Hong Kong
| | - Carmen K M Chan
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong; Hong Kong Eye Hospital, Kowloon, Hong Kong
| |
Collapse
|
33
|
Ghate D, Vedanarayanan V, Kamour A, Corbett JJ, Kedar S. Optic nerve morphology as marker for disease severity in cerebral palsy of perinatal origin. J Neurol Sci 2016; 368:25-31. [DOI: 10.1016/j.jns.2016.06.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 06/07/2016] [Accepted: 06/12/2016] [Indexed: 11/29/2022]
|
34
|
González-Martín-Moro J, Zarallo-Gallardo J. Over-diagnosis and over-treatment in Ophthalmology: A review of the literature. ACTA ACUST UNITED AC 2016; 91:526-534. [PMID: 27125187 DOI: 10.1016/j.oftal.2016.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/14/2016] [Accepted: 03/14/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To determine if the pernicious effects of over-diagnosis and over-treatment have been studied in the most common ocular diseases. MATERIAL AND METHODS Bibliographic search conducted in PubMed. RESULTS The search algorithm used retrieved 29 articles related with the topic. Most of them address the issue tangentially. Only 4 of them address the problem directly. One of them focuses on the problem of over-diagnosis and over-treatment in idiopathic intracranial hypertension. The remaining 3 focus on the problem of over-diagnosis and over-treatment in glaucoma. CONCLUSION The ophthalmology community has thought very little about the detrimental effects of over-diagnosis and over-treatment.
Collapse
Affiliation(s)
- J González-Martín-Moro
- Sección de Glaucoma y Neuro-oftalmología, Servicio de Oftalmología, Hospital Universitario del Henares, Coslada, Madrid, España; Grado de Medicina, Universidad Francisco de Vitoria, Pozuelo de Alarcón, Madrid, España.
| | - J Zarallo-Gallardo
- Grado de Medicina, Universidad Francisco de Vitoria, Pozuelo de Alarcón, Madrid, España; Sección de Retina, Servicio de Oftalmología, Hospital Universitario del Henares, Coslada, Madrid, Espana
| |
Collapse
|
35
|
Lee EJ, Choi YJ, Kim TW, Hwang JM. Comparison of the Deep Optic Nerve Head Structure between Normal-Tension Glaucoma and Nonarteritic Anterior Ischemic Optic Neuropathy. PLoS One 2016; 11:e0150242. [PMID: 27035660 PMCID: PMC4818084 DOI: 10.1371/journal.pone.0150242] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 02/02/2016] [Indexed: 11/21/2022] Open
Abstract
Purpose To compare the deep optic nerve head (ONH) structure between normal-tension glaucoma (NTG) and nonarteritic anterior ischemic optic neuropathy (NAION) and also in healthy subjects as a control using enhanced depth imaging (EDI) spectral-domain optical coherence tomography (SD-OCT). Methods This prospective cross-sectional study included 21 NAION patients who had been diagnosed as NAION at least 6 months prior to study entry, and 42 NTG patients and 42 healthy controls who were matched with NAION patients in terms of age, intraocular pressure (IOP), and optic disc area. The retinal nerve fiber layer (RNFL) thickness in the affected sector was also matched between NAION and NTG patients. The ONH was imaged using SD-OCT with the EDI technique. The anterior lamina cribrosa surface depth (LCD) and average prelaminar tissue (PT) thickness were measured in a sector of interest in each eye and compared among the three groups. Results In the sector-matched comparison, LCD was largest in NTG patients, followed by NAION patients, while PT was thinner in NTG patients than in NAION patients (all P < 0.001). NAION patients had a comparable LCD and a thinner PT relative to normal controls (P = 0.170 and < 0.001, respectively). Conclusion The deep ONH configuration is strikingly different between NTG and NAION. The differing features provide comparative insight into the pathophysiology of the two diseases, and may be useful for differential diagnosis.
Collapse
Affiliation(s)
- Eun Ji Lee
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Yun Jeong Choi
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Tae-Woo Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
- * E-mail:
| | - Jeong-Min Hwang
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| |
Collapse
|
36
|
Peeler C, Cestari DM. Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION): A Review and Update on Animal Models. Semin Ophthalmol 2016; 31:99-106. [PMID: 26959135 DOI: 10.3109/08820538.2015.1115248] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Crandall Peeler
- a Neuro-Ophthalmology Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School , Boston , Massachusetts , USA
| | - Dean M Cestari
- a Neuro-Ophthalmology Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School , Boston , Massachusetts , USA
| |
Collapse
|
37
|
Han S, Jung JJ, Kim US. Differences between Non-arteritic Anterior Ischemic Optic Neuropathy and Open Angle Glaucoma with Altitudinal Visual Field Defect. KOREAN JOURNAL OF OPHTHALMOLOGY 2015; 29:418-23. [PMID: 26635459 PMCID: PMC4668258 DOI: 10.3341/kjo.2015.29.6.418] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 05/14/2015] [Indexed: 12/03/2022] Open
Abstract
Purpose To investigate the differences in retinal nerve fiber layer (RNFL) change and optic nerve head parameters between non-arteritic anterior ischemic optic neuropathy (NAION) and open angle glaucoma (OAG) with altitudinal visual field defect. Methods Seventeen NAION patients and 26 OAG patients were enrolled prospectively. The standard visual field indices (mean deviation, pattern standard deviation) were obtained from the Humphrey visual field test and differences between the two groups were analyzed. Cirrus HD-OCT parameters were used, including optic disc head analysis, average RNFL thickness, and RNFL thickness of each quadrant. Results The mean deviation and pattern standard deviation were not significantly different between the groups. In the affected eye, although the disc area was similar between the two groups (2.00 ± 0.32 and 1.99 ± 0.33 mm2, p = 0.586), the rim area of the OAG group was smaller than that of the NAION group (1.26 ± 0.56 and 0.61 ± 0.15 mm2, respectively, p < 0.001). RNFL asymmetry was not different between the two groups (p = 0.265), but the inferior RNFL thickness of both the affected and unaffected eyes were less in the OAG group than in the NAION group. In the analysis of optic disc morphology, both affected and unaffected eyes showed significant differences between two groups. Conclusions To differentiate NAION from OAG in eyes with altitudinal visual field defects, optic disc head analysis of not only the affected eye, but also the unaffected eye, by using spectral domain optical coherence tomography may be helpful.
Collapse
Affiliation(s)
- Sangyoun Han
- Department of Ophthalmology, Kim's Eye Hospital, Seoul, Korea
| | - Jong Jin Jung
- Department of Ophthalmology, Kim's Eye Hospital, Seoul, Korea
| | - Ungsoo Samuel Kim
- Department of Ophthalmology, Kim's Eye Hospital, Seoul, Korea. ; Department of Ophthalmology, Konyang University College of Medicine, Daejeon, Korea
| |
Collapse
|
38
|
Galvez-Ruiz A, Elkhamary SM, Asghar N, Bosley TM. Cupping of the optic disk after methanol poisoning. Br J Ophthalmol 2015; 99:1220-3. [PMID: 25777817 DOI: 10.1136/bjophthalmol-2014-306354] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 02/22/2015] [Indexed: 11/04/2022]
Abstract
PURPOSE To assess the frequency and significance of optic disk cupping after methanol poisoning. METHODS We retrospectively reviewed the medical records of 50 consecutive patients with methanol poisoning, including visual acuity, pupillary reaction, and optic disk features such as the presence and degree of cupping. All patients were examined in the chronic phase after optic nerve damage. RESULTS Optic disk cupping ≥0.8 c/d was present in at least one eye of 22 of these 50 patients (43/100 eyes). Severity of cupping was statistically symmetric in the two eyes, and increasing severity of cupping was correlated with worse visual acuity (p=0.007) and increasing visual field loss. Degree of cupping was significantly correlated with increasing patient age but not with putaminal necrosis. CONCLUSIONS Optic disk cupping after methanol poisoning may be more common than previously recognised. Cupping in this setting may reflect toxicity of methanol metabolites to axons and glial cells in the prelaminar, laminar and retrolaminar regions, and seems to be important as a marker for worse optic nerve damage.
Collapse
Affiliation(s)
- Alberto Galvez-Ruiz
- Department of Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
| | - Sahar M Elkhamary
- Department of Diagnostic Imaging, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
| | - Nasira Asghar
- Department of Research, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
| | - Thomas M Bosley
- Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| |
Collapse
|
39
|
Martínez-Taboada VM, López-Hoyos M, Narvaez J, Muñoz-Cacho P. Effect of antiplatelet/anticoagulant therapy on severe ischemic complications in patients with giant cell arteritis: a cumulative meta-analysis. Autoimmun Rev 2014; 13:788-94. [PMID: 24667078 DOI: 10.1016/j.autrev.2014.02.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 02/17/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To evaluate the effect of antiplatelet/anticoagulant therapy on the occurrence of severe ischemic complications in GCA patients at diagnosis and while on treatment with corticosteroids (CS), and the risk of bleeding in these patients. METHODS A comprehensive search of PubMed and the Cochrane Central Register of Controlled Trials databases was completed and supplemented by hand searching of the references of all selected articles published from 1992 through December 2012. The cumulative meta-analysis included 6 retrospective studies that provided a total of 914 GCA patients. The effect of established antiplatelet/anticoagulant therapy on the occurrence of severe ischemic complications in patients with GCA at diagnosis and on the development of new severe ischemic complications in patients with GCA after diagnosis and while on treatment with CS were evaluated; as well as the risk of bleeding in patients with GCA on concomitant treatment with CS and antiplatelet/anticoagulant therapy. RESULTS Antiplatelet/anticoagulant therapy before the diagnosis of GCA was not associated with a protection to develop severe ischemic complications (OR: 0.661; 95% CI [0.287-1.520]; p=0.33). However, such a therapy may prevent from severe ischemic complications after the diagnosis of GCA (OR: 0.318; [0.101-0.996]; p=0.049) without increasing the risk of bleeding in patients with GCA on concomitant treatment with CS (OR: 0.658; [0.089-4.856]; p=0.682). CONCLUSIONS Antiplatelet/anticoagulant therapy prior to the diagnosis of GCA was not associated with reduction in severe ischemic complications. However, antiplatelet/anticoagulant therapy demonstrated a marginal benefit when used together with CS therapy in patients with established GCA without associated bleeding risk.
Collapse
Affiliation(s)
| | - Marcos López-Hoyos
- Division of Immunology, Hospital Universitario Marqués de Valdecilla-IFIMAV, Spain
| | - Javier Narvaez
- Division of Rheumatology, Hospital Universitario Bellvitge, Barcelona, Spain
| | - Pedro Muñoz-Cacho
- Gerencia Atención Primaria, Servicio Cántabro de Salud, Facultad de Medicina, Universidad de Cantabria, Santander, Spain
| |
Collapse
|
40
|
Zhang YX, Huang HB, Wei SH. Clinical characteristics of nonglaucomatous optic disc cupping. Exp Ther Med 2014; 7:995-999. [PMID: 24669265 PMCID: PMC3964932 DOI: 10.3892/etm.2014.1508] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 01/23/2014] [Indexed: 11/09/2022] Open
Abstract
Pathological optic disc cupping (ODC) is predominantly referred to as glaucoma; however, it is not only glaucoma that leads to pathological optic disc excavation. A number of other nonglaucomatous diseases also result in optic atrophy and excavation of the optic disc. Therefore, in the present study, the etiology of nonglaucomatous optic disc cupping (NGODC) was analyzed and differentiated from glaucomatous optic disc cupping (GODC). The morphology and clinical data of 19 eyes, from 12 patients exhibiting NGODC, were analyzed. Of the 12 cases, none were diagnosed with glaucoma, four presented with optic neuritis, one with Devic’s disease, one with Leber’s hereditary optic neuropathy, two with pituitary adenoma, one with basal ganglia cerebral hemorrhage, one with cilioretinal artery occlusion associated with central retinal vein occlusion, one with central retinal artery occlusion and the remaining patient exhibited optic nerve injuries. The key features that differentiated NGODC from GODC were the color of the optic disc rim and the correlation between visual field defects and the disc appearance. The focally notched disc also aided in distinguishing between the two disorders. The results of the present study indicated that it is critical to acknowledge that nonglaucomatous diseases also lead to ODC and that distinguishing between them is necessary.
Collapse
Affiliation(s)
- Yi-Xin Zhang
- Department of Ophthalmology, Hainan Branch of General Hospital of PLA, Sanya, Hainan 572013, P.R. China
| | - Hou-Bin Huang
- Department of Ophthalmology, General Hospital of PLA, Beijing 100853, P.R. China
| | - Shi-Hui Wei
- Department of Ophthalmology, General Hospital of PLA, Beijing 100853, P.R. China
| |
Collapse
|
41
|
Takahashi Y, Nakamura Y, Ichinose A, Kakizaki H. Intraocular Pressure Change With Eye Positions Before and After Orbital Decompression for Thyroid Eye Disease. Ophthalmic Plast Reconstr Surg 2014; 30:47-50. [DOI: 10.1097/iop.0000000000000007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
42
|
Gonul S, Koktekir BE, Bakbak B, Gedik S. Comparison of the ganglion cell complex and retinal nerve fibre layer measurements using Fourier domain optical coherence tomography to detect ganglion cell loss in non-arteritic anterior ischaemic optic neuropathy. Br J Ophthalmol 2013; 97:1045-50. [PMID: 23759443 DOI: 10.1136/bjophthalmol-2013-303438] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To evaluate the diagnostic ability of macular ganglion cell complex (GCC) and peripapillary nerve fibre layer (NFL) measurements to detect ganglion cell loss (GCL) in patients with non-arteritic anterior ischaemic optic neuropathy (NAION), at the chronic stage. METHODS This study included 10 eyes from 10 patients with NAION and 15 eyes from 15 age-matched healthy subjects. The measurements included the GCC thicknesses as average, superior and inferior, the GCC parameters as focal loss volume (FLV) and global loss volume (GLV), the NFL thicknesses as average, superior hemisphere and inferior hemisphere, and the disc parameters as rim area and rim volume. The curves for the area under the receiver operator characteristic (AUROC) were generated to assess the ability of each parameter to detect GCL. RESULTS The patient group had significantly lower GCC thicknesses than the control group (p<0.001, <0.001 and 0.004, for the GCC average, superior and inferior, respectively), and also significantly higher FLV and GLV measurements (p<0.001). The NFL thicknesses were found to be significantly lower in the patient group than the control subjects (p<0.001). Among all the parameters, the FLV and the GLV had the highest levels of AUROC values (1.000, 0.990, respectively). CONCLUSIONS The FLV and the GLV showed the strongest abilities to detect GCL in patients with NAION. In addition, peripapillary NFL thickness was comparable to macular GCC thickness in detecting GCL. Therefore, macular GCC scans may provide a good alternative or a complementary practice to NFL scans in the detection of GCL in patients with NAION.
Collapse
Affiliation(s)
- Saban Gonul
- Department of Ophthalmology, Selcuk University Faculty of Medicine, Konya, Turkey.
| | | | | | | |
Collapse
|
43
|
Validity of the American College of Rheumatology criteria for the diagnosis of giant cell arteritis. Am J Ophthalmol 2012; 154:722-9. [PMID: 22809782 DOI: 10.1016/j.ajo.2012.03.045] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 03/28/2012] [Accepted: 03/28/2012] [Indexed: 11/20/2022]
Abstract
PURPOSE To assess the clinical utility of the American College of Rheumatology criteria for the diagnosis of giant cell arteritis (GCA) in patients with positive and negative temporal artery biopsies. DESIGN Retrospective case series of all patients undergoing temporal artery biopsy. METHODS Retrospective chart review of all patients seen in the Neuro-ophthalmology Service of the Wills Eye Institute undergoing biopsy. One hundred twelve patients were identified between October 2001 and May 2006. Charts were reviewed for American College of Rheumatology criteria, biopsy results, and progression of visual loss after diagnosis. RESULTS Nine of 35 patients (25.7%) with positive biopsies would not have been diagnosed with GCA using American College of Rheumatology criteria alone. An additional 16 patients (45.7%) met only 2 criteria and required the positive biopsy to establish the American College of Rheumatology diagnosis of GCA. Eleven of 39 patients (28.2%) with negative biopsies met the criteria and would have been diagnosed with GCA. Diagnostic agreement between the American College of Rheumatology criteria without biopsy results and biopsy results alone was 51.4%; with the addition of biopsy results to the criteria, this increased to 73.0%. CONCLUSIONS The current American College of Rheumatology criteria should not be used to diagnose GCA and all patients suspected of having GCA should undergo a temporal artery biopsy.
Collapse
|
44
|
Greene DP, Richards CP, Ghazi NG. Comparison of optical coherence tomography findings in a patient with central retinal artery occlusion in one eye and end-stage glaucoma in the fellow eye. Middle East Afr J Ophthalmol 2012; 19:247-50. [PMID: 22623869 PMCID: PMC3353678 DOI: 10.4103/0974-9233.95265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
This case describes a patient with chronic central retinal artery occlusion in one eye and end-stage traumatic glaucoma in the fellow eye. Optical coherence tomography (OCT) of the macula of the chronic phase of central retinal artery occlusion of the right eye indicated loss of the normal foveal depression, extensive inner retinal atrophy, and marked retinal thinning. In contrast, scans of the left eye with end-stage glaucoma demonstrated an intact foveal depression and limited retinal thinning. The pattern of macular OCT findings in this patient illustrates distinguishing features between chronic central retinal artery occlusion and chronic optic neuropathy due to end-stage glaucoma.
Collapse
Affiliation(s)
- Daniel P Greene
- Department of Ophthalmology, Yale University, New Haven, CT 06510, USA
| | | | | |
Collapse
|
45
|
Jonas JB, Hayreh SS, Tao Y, Papastathopoulos KI, Rensch F. Optic nerve head change in non-arteritic anterior ischemic optic neuropathy and its influence on visual outcome. PLoS One 2012; 7:e37499. [PMID: 22629408 PMCID: PMC3357379 DOI: 10.1371/journal.pone.0037499] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2011] [Accepted: 04/23/2012] [Indexed: 11/27/2022] Open
Abstract
PURPOSE To evaluate changes in cup/disc (C/D) diameter ratios and parapapillary atrophy in patients with non-arteritic anterior ischemic optic neuropathy (NA-AION), using morphometric methods. METHODS The clinical non-interventional study included 157 patients with unilateral or bilateral NA-AION. Optic disc photographs taken from both eyes at the end of follow-up were morphometrically examined. RESULTS Follow-up was 86.3±70.3 months. Horizontal and vertical disc diameters (P = 0.30;P = 0.61, respectively), horizontal and vertical C/D ratios (P = 0.47;P = 0.19,resp.), and size of alpha zone and beta zone of parapapillary atrophy (P = 0.27;P = 0.32,resp.) did not differ significantly between affected eyes and contralateral normal eyes in patients with unilateral NA-AION. Similarly, horizontal and vertical disc diameters, horizontal and vertical C/D ratios, and size of alpha zone and beta zone did not vary significantly (all P>0.05) between the unaffected eyes of patients with unilateral NA-AION and the eyes of patients with bilateral NA-AION. Optic disc diameters, C/D ratios, size of alpha zone or beta zone of parapapillary atrophy were not significantly associated with final visual outcome in the eyes affected with NA-AION (all P>0.20) nor with the difference in final visual acuity between affected eyes and unaffected eyes in patients with unilateral NA-AION (all P>0.25). CONCLUSIONS NA-AION did not affect C/D ratios nor alpha zone and beta zone of parapapillary atrophy. Optic disc size was not related to the final visual acuity outcome in NA-AION.
Collapse
Affiliation(s)
- Jost B Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University Heidelberg, Mannheim, Germany.
| | | | | | | | | |
Collapse
|
46
|
Pedro-Egbe CN, Cookey SAH, Awoyesuku EA, Ani N. Nonglaucomatous optic neuropathies in Port Harcourt. Clin Ophthalmol 2011; 5:1447-50. [PMID: 22034569 PMCID: PMC3198423 DOI: 10.2147/opth.s24934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Aim To review the types of nonglaucomatous optic neuropathies seen in Port Harcourt, Nigeria. Materials and methods Medical case records of all cases of nonglaucomatous optic neuropathy seen in the Eye Clinic of University of Port Harcourt Teaching Hospital, Port Harcourt, Nigeria over a 5-year period were reviewed. Relevant data including patient demography, presenting visual acuity and intraocular pressure, and fundus findings were extracted. Other details included central visual field analysis and color vision results. Cases of glaucomatous optic neuropathy were excluded. Results Ninety-nine cases of optic neuropathy were seen over this time period. There were 52 (52.5%) males and 47 females. The mean age of those with optic neuropathy was 40 ± 18.774 years. Twenty-two patients (22.2%) had bilateral involvement, while the rest were unilateral. About 40% of the patients with optic neuropathies had optic atrophy. Nutritional causes accounted for 31.3% and optic neuritis 27.3%. Over 60% of the patients presented with visual acuities ≤6/60. Most patients (40%) had cecocentral scotoma. Conclusion Nonglaucomatous optic neuropathies resulting in optic atrophy is not uncommon in our environment and several factors may be implicated but the actual cause is difficult to determine because of late presentation of most patients.
Collapse
|
47
|
Burgoyne CF. A biomechanical paradigm for axonal insult within the optic nerve head in aging and glaucoma. Exp Eye Res 2011; 93:120-32. [PMID: 20849846 PMCID: PMC3128181 DOI: 10.1016/j.exer.2010.09.005] [Citation(s) in RCA: 276] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 09/04/2010] [Accepted: 09/07/2010] [Indexed: 12/27/2022]
Abstract
This article is dedicated to Rosario Hernandez for her warm support of my own work and her genuine enthusiasm for the work of her colleagues throughout her career. I first met Rosario as a research fellow in Harry Quigley's laboratory between 1991 and 1993. Along with Harry, John Morrison, Elaine Johnson, Abe Clark, Colm O'Brien and many others, Rosario's work has provided lamina cribrosa astrocyte cellular mechanisms that are biomechanically plausible and in so doing provided credibility to early notions of the optic nerve head (ONH) as a biomechanical structure. We owe a large intellectual debt to Rosario for her dogged persistence in the characterization of the ONH astrocyte and lamina cribrosacyte in age and disease. Two questions run through her work and remain of central importance today. First, how do astrocytes respond to and alter the biomechanical environment of the ONH and the physiologic stresses created therein? Second, how do these physiologic demands on the astrocyte influence their ability to deliver the support to retinal ganglion cell axon transport and flow against the translaminar pressure gradient? The purpose of this article is to summarize what is known about the biomechanical determinants of retinal ganglion cell axon physiology within the ONH in the optic neuropathy of aging and Glaucoma. My goal is to provide a biomechanical framework for this discussion. This framework assumes that the ONH astrocytes and glia fundamentally support and influence both the lamina cribrosa extracellular matrix and retinal ganglion cell axon physiology. Rosario Hernandez was one of the first investigators to recognize the implications of this unique circumstance. Many of the ideas contained herein have been initially presented within or derived from her work (Hernandez, M.R., 2000. The optic nerve head in glaucoma: role of astrocytes in tissue remodeling. Prog Retin Eye Res. 19, 297-321.; Hernandez, M.R., Pena, J.D., 1997. The optic nerve head in glaucomatous optic neuropathy. Arch Ophthalmol. 115, 389-395.).
Collapse
Affiliation(s)
- Claude F Burgoyne
- Optic Nerve Head Research Laboratory, Part of the Discoveries in Sight Research Laboratories of the Devers Eye Institute, Legacy Health System, 1225 NE 2nd Ave, Portland, OR 97232, USA.
| |
Collapse
|
48
|
Gupta PK, Asrani S, Freedman SF, El-Dairi M, Bhatti MT. Differentiating glaucomatous from non-glaucomatous optic nerve cupping by optical coherence tomography. Open Neurol J 2011; 5:1-7. [PMID: 21532867 PMCID: PMC3083760 DOI: 10.2174/1874205x01105010001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2010] [Revised: 08/20/2010] [Accepted: 09/01/2010] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND In clinical practice, the differentiation of glaucomatous from non-glaucomatous cupping can be difficult, even for experienced observers. The purpose of this study was to evaluate the role of optical coherence tomography (OCT) in differentiating glaucomatous from non-glaucomatous optic nerve cupping in a cross-sectional pilot study. METHODS Eleven consecutive patients presenting to the Duke Eye Center from September 2007 to July 2008 with non-glaucomatous optic nerve cupping and 12 patients with glaucomatous optic nerve cupping were identified. All patients underwent Stratus® OCT imaging: fast macular map, fast retinal nerve fiber layer (RNFL) 3.4 thickness, and fast optic disc protocols. Automated visual field perimetry was performed on the date of OCT scan in non-glaucomatous cupping patients, and from 0-9 months of scan date in glaucoma patients. Eyes were matched by optic nerve cup-to-disc area ratio; average and mean deviation were calculated for each variable. RESULTS For a similar average RNFL, patients with non-glaucomatous optic nerve cupping had lower nasal and temporal RNFL thickness, as well as lower macular thickness and volume compared to patients with glaucomatous optic nerve cupping. CONCLUSION OCT appears to be a useful technology in differentiating glaucomatous from non-glaucomatous optic nerve cupping. The pattern of RNFL loss appears more diffuse in non-glaucomatous optic nerve cupping compared to glaucomatous optic nerve cupping. Future studies with larger sample size and specific neuro-ophthalmic causes of optic nerve cupping may further elucidate the role of OCT in this clinical setting.
Collapse
Affiliation(s)
- Preeya K Gupta
- Departments of Ophthalmology Duke University Eye Center and Duke University Medical Center, USA
| | - Sanjay Asrani
- Departments of Ophthalmology Duke University Eye Center and Duke University Medical Center, USA
| | - Sharon F Freedman
- Departments of Ophthalmology Duke University Eye Center and Duke University Medical Center, USA
| | - Mays El-Dairi
- Departments of Ophthalmology Duke University Eye Center and Duke University Medical Center, USA
| | - M Tariq Bhatti
- Departments of Ophthalmology Duke University Eye Center and Duke University Medical Center, USA
- Medicine (Division of Neurology), Duke University Eye Center and Duke University Medical Center, USA
| |
Collapse
|
49
|
Abstract
PURPOSE OF REVIEW Postoperative vision loss (POVL) as related to spinal surgery and the prone position has garnered increasing attention in the US over the last 15 years, resulting in an increase of litigations submitted to the legal system. It might be associated with the development of new surgical techniques involving complex instrumentation of the spine. By 2000, the magnitude of this problem was such that the American Society of Anesthesiologists developed a Postoperative Visual Loss Registry in an effort to better understand and evaluate this devastating operative complication. RECENT FINDINGS The cause of ischemic optic neuropathy (ION) as the most complex entity of POVL is still unclear. Retrospective studies show that although it can strike patients of any age, there is an increased incidence in patients less than 18 and more than 65 years of age. Significant risk factors include male sex, anemia, surgery lasting over 6 h, and intraoperative hypotension. Profound anatomical knowledge and new animal studies have helped to define possible mechanisms underlying ION. SUMMARY ION is still poorly understood and risk factors remain speculative. Given that there is no known treatment, increased understanding should help to prevent this postoperative complication.
Collapse
|
50
|
|