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Relative peripheral refraction in patients with horizontal strabismus
Kyoko Matsushita1, Satoshi Hasebe, Hiroshi Ohtsuki
1Department of Ophthalmology, Okayama University, Graduate School of Medicine, Dentistry & Pharmaceutical Sciences, Okayama, Japan.
Japanese Journal of Ophthalmology
|November 6, 2010
Summary
Children with strabismus (eye misalignment) show different peripheral refractive error (RPR) compared to normal children. This difference may be linked to eye shape regulation during near work.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Vision Science
Background:
- Relative peripheral refraction (RPR) plays a role in eye growth and refractive error development.
- Strabismus, or eye misalignment, can affect visual input and potentially influence RPR.
Purpose of the Study:
- To compare RPR in children with horizontal strabismus to that in age-matched controls.
- To investigate potential differences in peripheral refractive error between strabismic and non-strabismic children.
Main Methods:
- Recruited 25 children with comitant horizontal strabismus and 37 control children.
- Measured cycloplegic refraction at multiple gaze positions using an autorefractometer.
- Calculated RPR by comparing primary gaze refraction to off-axis refraction.
Main Results:
- Strabismic children exhibited myopic RPR, while controls showed hyperopic RPR.
- Exotropic children displayed significant intersubject variability in nasal RPR.
- These RPR patterns were consistent in both dominant and nondominant eyes.
Conclusions:
- Horizontal strabismus is associated with distinct RPR profiles compared to normal children.
- Peripheral retinal defocus from eye misalignment during near work may influence RPR and eye shape regulation.
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