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Related Experiment Videos

Visual impairment in hysteria.

M C Barris1, D I Kaufman, D Barberio

  • 1Department of Internal Medicine (Division of Visual Science, Michigan State University, East Lansing.

Documenta Ophthalmologica. Advances in Ophthalmology
|January 1, 1992
PubMed
Summary

Most patients with non-organic vision loss improve with reassurance. This study found 78% of neuro-ophthalmology patients with functional visual field or acuity deficits recovered vision after organic causes were excluded.

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Area of Science:

  • Ophthalmology
  • Neurology

Background:

  • Non-organic visual impairment, also known as functional visual loss, presents a diagnostic challenge in neuro-ophthalmology.
  • These cases often require a comprehensive evaluation to rule out underlying organic pathology.

Purpose of the Study:

  • To determine the recovery rate of visual function in patients diagnosed with non-organic visual field or visual acuity loss.
  • To identify factors influencing the prognosis of visual recovery in this patient population.

Main Methods:

  • Retrospective chart review of 45 neuro-ophthalmology patients with non-organic visual deficits.
  • All patients underwent thorough neuro-ophthalmological examinations, magnetic resonance imaging (MRI), pattern visual evoked potentials (PVEP), and flash electroretinography (fERG).
  • A single physician conducted initial and follow-up examinations to assess visual changes.

Main Results:

  • The study included 45 patients with 79 documented monocular visual field or visual acuity losses of non-organic origin.
  • Visual deficits included visual field defects only (33%), visual field and acuity defects (62%), and visual acuity defects only (5%).
  • Seventy-eight percent of patients demonstrated improvement or normalized vision following reassurance and a recovery timetable, while 22% showed no improvement.

Conclusions:

  • Functional visual impairments in neuro-ophthalmology often have a positive prognosis for recovery.
  • Reassurance and a structured recovery plan are key components in managing non-organic visual loss.
  • Younger patients without evident psychiatric disorders tend to have a better visual recovery outlook compared to older patients.

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