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Related Experiment Videos

[Quadruple sectoranopia].

E Denion1, S Defoort-Dhellemmes, C-F Arndt

  • 1Centre d'Exploration Fonctionnelle de la Vision, Hôpital Roger Salengro, Lille. edenion@wanadoo.fr

Journal Francais D'Ophtalmologie
|January 6, 2006
PubMed
Summary
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Quadruple sectoranopia, a rare visual defect, results from damage to the lateral geniculate body, often due to anterior choroidal artery issues. Recovery is possible if infarction is not the sole cause.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Vascular Neurology

Context:

  • Quadruple sectoranopia is a rare visual field defect characterized by blind sectors in the upper and lower visual fields, sparing a horizontal zone.
  • This syndrome is linked to ischemia or infarction in the lateral parts of the lateral geniculate body (LGB).
  • The LGB is supplied by the distal anterior choroidal artery (ACA).

Purpose:

  • To describe the etiology and characteristics of quadruple sectoranopia.
  • To correlate the visual field defect with specific vascular events affecting the ACA and LGB.
  • To explore potential for recovery based on the extent of LGB damage.

Summary:

  • Quadruple sectoranopia involves homonymous, congruent upper and lower visual field defects due to lateral LGB ischemia/infarction, often ACA-related.

Related Experiment Videos

  • Etiologies include ACA ligation during surgery, ACA infarction from stroke, and arteriovenous malformations causing vascular steal.
  • Ganglionic nerve fiber atrophy may occur with infarction; partial recovery is possible if ischemia is not solely due to infarction.

    • Impact:

    • Enhances understanding of rare visual field defects and their underlying neurovascular causes.
    • Provides etiological insights into conditions affecting the anterior choroidal artery and lateral geniculate body.
    • Suggests potential for visual recovery in specific cases of lateral geniculate body dysfunction.