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Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
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Association Between Ocular Dominance and Anisometropic Hyperopia.

Rie Hoshikawa1, Misae Ito2, Takashi Yano3

  • 1From the Department of Ophthalmology, Kitasato University Hospital, Kanagawa, Japan; Pink417dj@yahoo.co.jp.

The American Orthoptic Journal
|November 2, 2016
PubMed
Summary

In hyperopic patients, the nondominant eye typically shows greater hyperopia and a shorter axial length compared to the dominant eye, especially with significant refractive asymmetry. This finding is crucial for understanding visual development.

Keywords:
anisometropiahyperopiaocular dominance

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Area of Science:

  • Ophthalmology
  • Refractive Error Research
  • Pediatric Eye Conditions

Background:

  • Anisometropia, a difference in refractive error between eyes, is frequently observed in individuals with hyperopia.
  • Understanding the relationship between ocular dominance and refractive asymmetry is vital for managing hyperopia.

Purpose of the Study:

  • To investigate the association between ocular dominance (sighting dominance) and refractive asymmetry in hyperopic patients.
  • To determine if ocular dominance influences the degree of hyperopic anisometropia.

Main Methods:

  • Retrospective analysis of 223 hyperopic patients (ages 3-21 years).
  • Cycloplegic refraction and axial length measurements (IOLMaster®).
  • Ocular dominance assessed using the hole-in-the-card test; anisometropia categorized into four groups.

Main Results:

  • The nondominant eye exhibited significantly higher hyperopia, astigmatism, and shorter axial length compared to the dominant eye (P < 0.001).
  • This difference was particularly pronounced in patients with spherical equivalent anisometropia of 0.50 D or greater.
  • Right and left eye dominance occurred in 66% and 34% of patients, respectively.

Conclusions:

  • The nondominant eye tends to have greater hyperopic refractive error and shorter axial length than the dominant eye in hyperopic patients.
  • This effect is more pronounced in cases of significant hyperopic anisometropia.