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Published on: February 8, 2020
Association between ocular dominance and refractive asymmetry
Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|August 20, 2013
Summary
Non-dominant eyes show greater myopia and longer axial length compared to dominant eyes, particularly in individuals with high anisometropia. This finding highlights refractive asymmetry related to ocular dominance.
Area of Science:
- Ophthalmology
- Refractive Error Research
Background:
- Ocular dominance, or sighting dominance, is a key factor in binocular vision.
- Understanding refractive asymmetry is crucial for diagnosing and managing visual impairments.
Purpose of the Study:
- To investigate the relationship between ocular dominance and refractive asymmetry in phakic patients.
- To determine if eye dominance influences refractive error and axial length.
Main Methods:
- Retrospective analysis of 3,012 phakic patients (ages 20-39).
- Cycloplegic refraction and axial length measurements (IOLMaster).
- Ocular dominance assessed via the hole-in-the-card test.
Main Results:
- Non-dominant eyes exhibited significantly higher myopic spherical equivalents and longer axial lengths in the high anisometropia group (≥ 2.0 diopters).
- No significant differences were observed in the low anisometropia group.
- Right eyes were dominant in 77.7% of patients, left eyes in 22.3%.
Conclusions:
- Non-dominant eyes tend to have greater myopic refractive error and axial length than dominant eyes.
- This effect is more pronounced in patients with high levels of anisometropia.
- Ocular dominance is associated with refractive asymmetry in phakic individuals.
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