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Updated: Mar 6, 2026
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Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
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[Peripheral refraction: cause or effect of refraction development?]
E P Tarutta1, E N Iomdina1, N G Kvaratskheliya1
1Moscow Helmholtz Research Institute of Eye Diseases, Ministry of Health of the Russian Federation, 14/19 Sadovaya-Chernogryazskaya St., Moscow, Russian Federation, 105062.
Vestnik Oftalmologii
|March 15, 2017
Summary
Peripheral myopic defocus decreases as clinical refraction increases in children. Mixed peripheral defocus, a transitional stage, was observed, indicating non-uniform eyeball stretching during refractive development.
Area of Science:
- Ophthalmology
- Pediatric Optometry
- Ocular Biomechanics
Background:
- Peripheral refraction plays a role in emmetropization.
- Understanding peripheral defocus is crucial for myopia progression research.
Purpose of the Study:
- To investigate peripheral refraction and eyeball shape in children with varying clinical refractions.
- To correlate peripheral refractive error with ocular dimensions.
Main Methods:
- Peripheral refraction measured temporally and nasally (10-12 degrees) in 56 children (ages 7-16).
- Eyeball shape assessed by the ratio of axial length (AL) to horizontal diameter (HD).
Main Results:
- Peripheral myopic defocus decreased with increasing clinical refraction (high hyperopia to high myopia).
- Mixed peripheral defocus, a novel finding in children, was more frequent in higher myopia, suggesting non-uniform posterior pole stretching.
- Axial length (AL) growth outpaced horizontal diameter (HD) growth with increasing myopia.
Conclusions:
- Natural peripheral defocus is a consequence of changes in eyeball size and shape during refractive development.
- Ocular shape and peripheral defocus are intrinsically linked to the progression of refractive errors in children.
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