The visual evoked response (VER) was evaluated in a series of multiple sclerosis patients and normal subjects. The data showed significant delays in wave peak latencies among the patient evoked responses. The prolonged latencies correlated closely with visual impairment; however, even patients with a previous history of visual impairment, but with no deficits noticeable on examination at the time of study, showed a delay in wave peak latencies. The results further suggest that the VER is primarily altered when there are central field defects.
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↵1 This research supported by National Multiple Sclerosis Society Grant #516-C-3 and United States Public Health Grant #NSO8711. Computing assistance obtained from Health Sciences Computing Facility, UCLA, sponsored by NIH Special Research Resource Grant RR-3.
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