Specific deficits of flicker sensitivity in glaucoma and ocular hypertension.
Temporal modulation sensitivity for a 5 degree flickering field was measured in central and peripheral retina for 46 eyes with glaucoma and ocular hypertension. Prior to showing any visual field loss by conventional perimetry, 90% of patients exhibited significant losses in sensitivity around a specific frequency of about 30 to 40 Hz. Low-frequency sensitivity and critical flicker frequency were often unaffected by such losses. The central field showed almost as pronounced a loss as 20 degree in the periphery.
D000328:Adult; D000368:Aged; D000375:Aging; D005425:Flicker Fusion; D005901:Glaucoma / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D007429:Intraocular Pressure; D008875:Middle Aged; D010775:Photic Stimulation / Q000379:methods; D014792:Visual Acuity; D058609:Visual Field Tests; D014794:Visual Fields