Contrast sensitivity in retinal disease.
Central vision in patients with retinal disorders has been studied with sinusoidal grating patterns. Impaired detection of fine high-contrast gratings has been observed in patients with retinitis pigmentosa and glaucoma despite 20/20 vision. Abnormal contrast sensitivity to coarse gratings occurred in patients with certain macular disorders and occasional glaucoma patients, some with near-normal Snellen acuity. Thus, contrast sensitivity measurements demonstrate central visual deficits not apparent with Snellen testing.
D005901:Glaucoma / Q000503:physiopathology; D006801:Humans; D008268:Macular Degeneration / Q000503:physiopathology; D012164:Retinal Diseases / Q000175:diagnosis* / Q000503:physiopathology; D012174:Retinitis Pigmentosa / Q000503:physiopathology; D014787:Vision Tests / Q000295:instrumentation / Q000379:methods*; D014792:Visual Acuity