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Related Experiment Videos

High-pass resolution perimetry in optic neuritis.

M Wall1

  • 1Department of Psychiatry & Neurology, Tulane University School of Medicine, New Orleans, Louisiana 70112.

Investigative Ophthalmology & Visual Science
|August 1, 1991
PubMed
Summary
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Resolved optic neuritis causes significant visual field defects, often patchy, affecting central vision. Even unaffected eyes show mild vision loss, impacting retinocortical channels.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Visual Science

Background:

  • Optic neuritis can lead to persistent visual field defects.
  • The detailed topography and extent of these defects are not fully understood.

Purpose of the Study:

  • To investigate the topography of visual field defects in resolved optic neuritis using high-pass resolution perimetry.
  • To quantify visual field loss in involved and uninvolved eyes of patients compared to controls.

Main Methods:

  • High-pass resolution perimetry was used to assess central visual field defects.
  • 18 patients with resolved optic neuritis and 18 age-matched controls were studied.
  • Visual fields were analyzed in involved eyes, uninvolved eyes, and control eyes.

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Main Results:

  • Involved eyes showed widespread visual field depression, particularly centrally.
  • Uninvolved eyes exhibited mild, generalized visual field depression.
  • Spatial resolution acuity revealed significantly reduced functioning retinocortical channels in involved (58%) and uninvolved (94%) eyes compared to controls (112%).

Conclusions:

  • Resolved optic neuritis results in significant, often patchy, central visual field defects (cecocentral and arcuate).
  • A mild, generalized visual field depression is present even in the "uninvolved" eyes.
  • Spatial resolution perimetry is effective in quantifying visual field loss and retinocortical channel function after optic neuritis.