Delayed visual evoked cortical potentials in retinal disease.
Flash and pattern visual evoked potentials (VEPs) were recorded in 16 patients with macular disease and in 3 patients with retinitis pigmentosa. Pathological VEP latencies were seen in 14 of the patients with macular lesions and in one with retinitis pigmentosa. Most eyes with a visual acuity below 0.2 showed delayed pattern responses. However, patients with higher visual acuity also had delayed pattern VEPs. It is concluded that an increase in VEP latency is not a specific sign of optic nerve lesion but may also occur in retinal disease, affecting different parts of the sensory retina.
D000293:Adolescent; D000328:Adult; D002648:Child; D005074:Evoked Potentials, Visual; D005260:Female; D006801:Humans; D008268:Macular Degeneration / Q000175:diagnosis / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D012174:Retinitis Pigmentosa / Q000175:diagnosis / Q000503:physiopathology*; D014792:Visual Acuity