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Abstract #71569 Published in IGR 18-3

Risk factors for visual field progression of normal-tension glaucoma in patients with myopia

Bae HW; Seo SJ; Lee SY; Lee YH; Hong S; Seong GJ; Kim CY
Canadian Journal of Ophthalmology 2017; 52: 107-113

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OBJECTIVE: To identify risk factors for visual field progression of normal-tension glaucoma (NTG) in patients with myopia. DESIGN: Longitudinal, observational study. PARTICIPANTS: Fifty-one eyes of 51 NTG patients with myopia (less than -0.75D based on spherical equivalence) who had undergone visual field (VF) testing at least once per year for ≥6 years between November 2005 and December 2013. METHODS: Progression was defined using event-based guided progression analysis. Risk factors were analyzed using the Cox proportional hazards model and further tested for independence in a multivariate model. RESULTS: The mean observation period was 7.0 ± 1.3 years, and 16 of 51 subjects showed progression. In the univariate analysis, abnormal retinal nerve fibre layer (RNFL) colour codes (yellow or red sector) at the 11, 10, and 7 o'clock positions on optical coherence tomography showed significant associations with the VF progression (p = 0.03, 0.03, and 0.01, respectively). In the final multivariate models, the abnormal RNFL colour code of the 7 o'clock sector (inferotemporal sector) was the only significant risk factor for progression (hazard ratio = 4.07 and 4.37; 95% CI, 1.11-14.92 and 1.27-15.04; p = 0.03 and 0.02, respectively). CONCLUSIONS: Inferotemporal RNFL thinning could be a risk factor for progression in NTG patients with myopia.

Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Republic of Korea.

Full article

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Classification:

9.2.4 Normal pressure glaucoma (Part of: 9 Clinical forms of glaucomas > 9.2 Primary open angle glaucomas)
6.20 Progression (Part of: 6 Clinical examination methods)
8.1 Myopia (Part of: 8 Refractive errors in relation to glaucoma)
6.9.2.2 Posterior (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis > 6.9.2 Optical coherence tomography)

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