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Cyclic strabismus without binocular function

P Riordan-Eva1, S F Vickers, B McCarry

  • 1Moorfields Eye Hospital, London, England.

Journal of Pediatric Ophthalmology and Strabismus
|March 1, 1993
PubMed
Summary
This summary is machine-generated.

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Cyclic esotropia can develop even without binocular vision. Unlike typical cases, these patients had manifest esotropia on "good days," challenging previous theories on cyclic strabismus.

Area of Science:

  • Ophthalmology
  • Neuroscience

Background:

  • Cyclic strabismus is characterized by periodic deviations in eye alignment.
  • A cyclic variation in binocular function is often considered the underlying mechanism.

Observation:

  • Two adult patients with cyclic esotropia were studied.
  • One patient lacked demonstrable binocular function; the other had severe unilateral visual loss.

Findings:

  • Cyclic esotropia occurred despite absent or severely impaired binocular function.
  • Unlike typical cases, esotropia persisted on "good days" in these patients.
  • Binocular function is not essential for cyclic strabismus development.

Implications:

  • This challenges the necessity of binocular function for cyclic strabismus.

Related Experiment Videos

  • It suggests alternative mechanisms may underlie cyclic strabismus.
  • Understanding these variations aids in diagnosing and managing strabismus.