VISUAL FUNCTION ASSESSMENT BY PATTERN VISUAL EVOKED POTENTIAL AND PATTERN ELECTRORETINO GRAM IN CHRONIC SIMPLE GLAUCOMA

Abstract

To assess visual function in pnmary open angle glaucoma (POAG), pattern electroretinogram (PERG) and visual evoked potentials (PVEP) were studied in 27 patients with (raised intraocular pressure, large cup-disc ratio, glaucomatous visual field defects and normal open angle) and having an almost clear media, using transient reversal pattern stimulation (30' minutes, high contrast black-white checks). The (POAG) group was subdivided into 3 subgroups according to• visual field defects (mild, moderate and severe groups). Also, according to intraocular pressure level (lOP), the (POAG) group was subdivided into 2 subgroups (high and very high groups). Comparing the responses with a similar matched age and sex group of 15 healthy subjects. Both groups were subjected to medical and ophthalmic examination.