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Palinopsia from posterior visual pathway lesions without visual field defects.

Molly E Ritsema1, Marjorie A Murphy

  • 1Department of Ophthalmology, Brown University, Rhode Island Hospital, Providence, Rhode Island 02903, USA.

Journal of Neuro-Ophthalmology : the Official Journal of the North American Neuro-Ophthalmology Society
|June 6, 2007
PubMed
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Palinopsia, the persistence of visual images, can stem from drug use or posterior visual pathway damage. Even without visual field defects, patients with palinopsia warrant neuroimaging to detect underlying lesions.

Area of Science:

  • Neuro-ophthalmology
  • Neuroscience
  • Medical imaging

Background:

  • Palinopsia, characterized by persistent visual images, is often linked to drug use or lesions in the posterior visual pathway.
  • Typically, visual pathway lesions causing palinopsia are accompanied by homonymous hemianopic visual field defects.

Observation:

  • This study details two patients experiencing palinopsia due to structural lesions in the posterior visual pathway.
  • Crucially, these patients did not exhibit any visual field defects.

Findings:

  • Structural posterior visual pathway lesions can cause palinopsia even when visual fields are entirely normal.
  • This challenges the conventional assumption that visual field defects are a prerequisite for lesion-related palinopsia.

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Implications:

  • The findings underscore the importance of neuroimaging for all patients presenting with palinopsia, irrespective of their visual field examination results.
  • This diagnostic approach may lead to earlier identification of posterior visual pathway pathologies.