April 1991
Volume 32, Issue 5
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Articles  |   April 1991
Relationship of oscillatory potential amplitude to A-wave slope over a range of flash luminances in normal subjects.
Author Affiliations
  • M A Sandberg
    Berman-Gund Laboratory for the Study of Retinal Degenerations, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston.
  • H Lee
    Berman-Gund Laboratory for the Study of Retinal Degenerations, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston.
  • G P Matthews
    Berman-Gund Laboratory for the Study of Retinal Degenerations, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston.
  • A R Gaudio
    Berman-Gund Laboratory for the Study of Retinal Degenerations, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston.
Investigative Ophthalmology & Visual Science April 1991, Vol.32, 1508-1516. doi:
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    • Get Citation

      M A Sandberg, H Lee, G P Matthews, A R Gaudio; Relationship of oscillatory potential amplitude to A-wave slope over a range of flash luminances in normal subjects.. Invest. Ophthalmol. Vis. Sci. 1991;32(5):1508-1516.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

The effect of flash luminance on the relationship of oscillatory potential (OP) amplitude, as a measurement of inner retinal function, to a-wave slope, as a measurement of photoreceptor function, was evaluated in full-field electroretinograms recorded from normal subjects. The ratio of OP amplitude to a-wave slope was found to be independent of flash luminance over a 3000-fold luminance range. This finding raises the possibility that a reduction in the ratio of OP amplitude to a-wave slope in eyes with media opacities may be used as a sign of inner retinal malfunction. Selected cases are presented to illustrate application of this approach.

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