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Impaired Fellow Eye Motion Perception and Abnormal Binocular Function.

Eileen E Birch1,2, Reed M Jost1, Yi-Zhong Wang1

  • 1Crystal Charity Ball Pediatric Vision Laboratory, Retina Foundation of the Southwest, Dallas, Texas, United States.

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|August 7, 2019
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Summary
This summary is machine-generated.

Fellow eye motion-defined form (MDF) perception deficits are common in children with amblyopia or strabismus. Binocular amblyopia treatment benefits the fellow eye, suggesting improved cortical mechanisms.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Developmental Pediatrics

Background:

  • Binocular vision discordance from strabismus or anisometropia can impair visual acuity and motion perception.
  • Motion-defined form (MDF) perception, identifying shapes by motion contrast, is crucial for visual development.

Purpose of the Study:

  • Determine the prevalence of fellow-eye deficits in MDF perception.
  • Examine the role of visual acuity and binocularity.
  • Assess associations with clinical factors and the effectiveness of amblyopia treatment.

Main Methods:

  • Studied 91 children with residual amblyopia, 79 nonamblyopic children with treated strabismus/anisometropia, and 20 controls.
  • Measured MDF coherence thresholds, visual acuity, stereoacuity, and interocular suppression.

Main Results:

  • Fellow-eye MDF deficits occurred in 23% of children with residual amblyopia and 20% of nonamblyopic children.
  • Stereoacuity and age of patching correlated with MDF thresholds.
  • Binocular treatment showed greater benefit than patching alone.

Conclusions:

  • Fellow-eye MDF deficits are common, linked to early discordant visual experience and abnormal cortical mechanisms.
  • Binocular amblyopia treatment improves fellow-eye MDF perception, benefiting overall binocular function.