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Related Experiment Videos

Pattern visual evoked potentials and spatial vision in retrobulbar neuritis and multiple sclerosis.

D Neima, D Regan

    Archives of Neurology
    |February 1, 1984
    PubMed
    Summary

    Visual evoked potential (VEP) tests and contrast sensitivity accurately predict visual acuity in multiple sclerosis (MS) patients. Abnormalities in contrast sensitivity correlate with VEP amplitude, aiding in understanding MS visual dysfunction.

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    Area of Science:

    • Neuroscience
    • Ophthalmology
    • Clinical Neurology

    Background:

    • Discrepancies exist between visual evoked potential (VEP) and Snellen visual acuity in multiple sclerosis (MS).
    • Understanding visual pathway dysfunction in MS is crucial for diagnosis and management.

    Purpose of the Study:

    • To reconcile disagreements between VEP and visual acuity in MS patients.
    • To compare VEP and visual acuity with contrast sensitivity (CS) in MS.

    Main Methods:

    • Compared VEP recordings, Snellen visual acuity, and sine-wave grating-contrast sensitivity curves.
    • Analyzed data from patients with multiple sclerosis.

    Main Results:

    • High spatial frequency visual sensitivity loss correlated with reduced visual acuity and small-check VEP attenuation.

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  • Generalized visual sensitivity loss correlated with reduced visual acuity and attenuated large- and small-check VEPs.
  • Contrast sensitivity abnormalities predicted VEP amplitude abnormalities but not VEP delay.

    • Conclusions:

    • Contrast sensitivity testing is a valuable tool for assessing visual function in MS.
    • VEP amplitude abnormalities align with contrast sensitivity deficits in MS.
    • VEP delay is less reliably predicted by contrast sensitivity measures.