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Determining rates of visual field progression in glaucoma
Author(s) -
CHAUHAN B
Publication year - 2008
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2008.4152.x
Subject(s) - visual field , glaucoma , optometry , field (mathematics) , visual field loss , medicine , computer science , ophthalmology , artificial intelligence , mathematics , pure mathematics
Purpose To provide practical guidelines on detecting rates of visual field progression in glaucoma Methods Using a mixture of real patient data, computer simulation and statistical analysis, the frequency of visual field examinations for detecting various rates of visual field change were determined. Results Our results show that the ability to detect rates of visual field change depends critically on the magnitude of the change we wish to detect and the variability of visual fields. They also show that performing only one visual field per year will lead to failure to detect very significant visual field loss. The statistical power to detect clinically meaningful rates increases with 2 or 3 examinations per year Conclusion This study provides guidance to general ophthalmologists and glaucoma specialists on detecting rates of visual field progression in glaucoma.Commercial interest