November 1987
Volume 28, Issue 11
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Articles  |   November 1987
Characteristic ERG-flicker anomaly in incomplete congenital stationary night blindness.
Author Affiliations
  • Y Miyake
    Department of Ophthalmology, Nagoya University School of Medicine, Japan.
  • M Horiguchi
    Department of Ophthalmology, Nagoya University School of Medicine, Japan.
  • I Ota
    Department of Ophthalmology, Nagoya University School of Medicine, Japan.
  • N Shiroyama
    Department of Ophthalmology, Nagoya University School of Medicine, Japan.
Investigative Ophthalmology & Visual Science November 1987, Vol.28, 1816-1823. doi:
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    • Get Citation

      Y Miyake, M Horiguchi, I Ota, N Shiroyama; Characteristic ERG-flicker anomaly in incomplete congenital stationary night blindness.. Invest. Ophthalmol. Vis. Sci. 1987;28(11):1816-1823.

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

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Abstract

Ten patients with the incomplete type of congenital stationary night blindness (CSNB) were examined with a 30 Hz flicker electroretinogram (ERG). After 30 min of dark adaptation, 30 Hz flicker ERG was recorded continuously for 12-15 min under white background illumination. All patients showed an exaggerated increase of amplitude and a universal characteristic change of wave shape as the light adaptation progressed. Thirty normal subjects also showed increased amplitude during light adaptation, but the increase in amplitude was significantly less than in incomplete-type CSNB, and there was little change in wave shape. The same procedure was applied to patients with complete-type CSNB, retinitis pigmentosa, congenital retinoschisis, cone dystrophy, and Oguchi's disease; neither the exaggerated increase of amplitude nor the wave change was seen. Our results indicate that incomplete-type CSNB is a newly identified cone-rod dysfunction syndrome with a special functional property.

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