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Visual evoked responses in patients with multiple sclerosis.

N S Namerow, N Enns

    Journal of Neurology, Neurosurgery, and Psychiatry
    |December 1, 1972
    PubMed
    Summary

    Visual evoked response (VER) testing revealed delayed brain signal responses in multiple sclerosis patients, even those without apparent vision loss. These delays correlate with visual impairment and suggest central field defects.

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    Area of Science:

    • Neuroscience
    • Ophthalmology
    • Neurology

    Background:

    • Multiple sclerosis (MS) is a demyelinating disease affecting the central nervous system.
    • Visual disturbances are common in MS, impacting patient quality of life.
    • The visual evoked response (VER) is a neurophysiological test assessing the integrity of the visual pathway.

    Purpose of the Study:

    • To evaluate visual evoked response (VER) alterations in multiple sclerosis (MS) patients.
    • To correlate VER findings with visual impairment in MS.
    • To identify specific visual pathway deficits indicated by VER changes.

    Main Methods:

    • Administered visual evoked response (VER) tests to a cohort of MS patients and healthy controls.
    • Measured wave peak latencies in the VER recordings.
    • Correlated latency data with clinical assessments of visual function.

    Main Results:

    • Significantly prolonged wave peak latencies were observed in the VER of MS patients compared to controls.
    • These prolonged latencies showed a strong correlation with the degree of visual impairment.
    • Delayed VER latencies were detected even in MS patients with no clinically apparent visual deficits at the time of testing.

    Conclusions:

    • VER testing is a sensitive tool for detecting subclinical visual pathway dysfunction in MS.
    • Prolonged VER latencies in MS patients are indicative of visual impairment, particularly central field defects.
    • VER analysis can aid in the early detection and monitoring of visual complications in multiple sclerosis.

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