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Related Experiment Videos

Abnormal visual-evoked potentials from eyes with optic nerve head drusen

R A Stevens, N M Newman

    American Journal of Ophthalmology
    |December 1, 1981
    PubMed
    Summary

    Optic nerve head drusen frequently cause visual field abnormalities and retinal nerve fiber layer deficits. Visual evoked potentials often show aberrations, correlating with nerve fiber layer damage in optic nerve head drusen patients.

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    Area of Science:

    • Ophthalmology
    • Neuro-ophthalmology

    Background:

    • Optic nerve head drusen are abnormal growths within the optic nerve.
    • These drusen can impact visual function and optic nerve integrity.

    Purpose of the Study:

    • To assess visual function and optic nerve status in patients with optic nerve head drusen.
    • To correlate findings from visual field testing, nerve fiber layer imaging, and visual evoked potentials.

    Main Methods:

    • Evaluated 38 eyes from 29 patients with optic nerve head drusen.
    • Utilized static, tangent screen, and Goldmann perimetry for visual field testing.
    • Assessed nerve fiber layer using red-free fundus photography and flash visual-evoked potentials.

    Main Results:

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  • 75% of eyes showed abnormal visual fields, 94.7% had abnormal nerve fiber layers, and 97.2% exhibited abnormal visual evoked potentials.
  • No single test reliably predicted the results of others.
  • A correlation was observed between visual evoked potential abnormalities and retinal nerve fiber layer deficits.

    • Conclusions:

    • Optic nerve head drusen significantly impact visual pathways.
    • Visual evoked potentials and nerve fiber layer imaging are highly sensitive in detecting functional deficits.
    • Further research is warranted to understand the relationship between these tests in optic nerve head drusen.