May 1989
Volume 30, Issue 5
Free
Articles  |   May 1989
Pattern-evoked potentials and optic nerve fiber loss in monocular laser-induced glaucoma.
Author Affiliations
  • M A Johnson
    Wilmer Ophthalmological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland.
  • B A Drum
    Wilmer Ophthalmological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland.
  • H A Quigley
    Wilmer Ophthalmological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland.
  • R M Sanchez
    Wilmer Ophthalmological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland.
  • G R Dunkelberger
    Wilmer Ophthalmological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Investigative Ophthalmology & Visual Science May 1989, Vol.30, 897-907. doi:
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    • Get Citation

      M A Johnson, B A Drum, H A Quigley, R M Sanchez, G R Dunkelberger; Pattern-evoked potentials and optic nerve fiber loss in monocular laser-induced glaucoma.. Invest. Ophthalmol. Vis. Sci. 1989;30(5):897-907.

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

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Abstract

ERG and VEP responses to counterphase checkerboard stimuli were obtained from cynomolgus monkeys with monocular glaucoma induced by laser photocoagulation of the trabecular meshwork. The glaucomatous eyes showed reductions of PERG amplitude that were directly related to the histologically defined nerve damage. VEP amplitudes were also reduced in the glaucomatous eyes, but were more variable and less affected by damage than the PERG responses. An acute increase in eye pressure to 40 mm Hg in eyes without damage had no detectable effect on PERG amplitudes.

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