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[Functional monocular hemianopsia].

A Neetens1, H Smet

  • 1Département d'Ophtalmologie, Université d'Anvers, UIA.

Klinische Monatsblatter Fur Augenheilkunde
|May 1, 1988
PubMed
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Ophthalmologists can differentiate functional visual field loss from genuine conditions using specific tests. These methods help identify malingering or conversion hysteria versus actual anatomical lesions causing visual impairment.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Psychiatry

Background:

  • Functional visual field loss can mimic organic deficits.
  • Patients may present with central visual dysfunction or hemianopic field changes.
  • Distinguishing functional from organic causes is crucial for diagnosis and treatment.

Observation:

  • Malingering, suggestibility, and conversion hysteria can manifest as functional visual field loss.
  • The primary symptom is a subjective sensory change in visual field.
  • Ophthalmologists must employ specific subjective and objective tests to confirm or refute functional origins.

Findings:

  • Tests can reveal incompatibilities between reported visual field loss and physiological realities.
  • Functional hemianopias, such as temporal or nasal types, are compared to those from anatomical lesions.

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  • The specificity of diagnostic tests is key in differentiating these conditions.

    • Implications:

    • Accurate diagnosis prevents misattribution of symptoms and inappropriate management.
    • Understanding functional visual deficits aids in patient care and therapeutic strategies.
    • This distinction is vital for appropriate neurological and psychiatric referrals.