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Updated: Jan 19, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
Accommodation and peripheral retinal defocus in school-age myopic children
Simin Zhang1, Riping Zhang2, Tsz Kin Ng3
1Joint Shantou International Eye Center of Shantou University and the Chinese University of Hong Kong, Shantou, Guangdong, China; GuangDong Engineering Technology Research Center of Precision Treatment for Ocular Diseases, Shantou, Guangdong, China; Guangdong Engineering Research Center of Intelligent Diagnosis and Treatment for Ocular Diseases, Shantou, Guangdong, China; Kunming Purui Ophthalmic Hospital Co., Ltd, Longquan Road, Kunming, Yunnan, China.
Accommodation significantly impacts peripheral retinal defocus in children wearing glasses. Cycloplegia induces hyperopic shifts, influencing defocus distribution and axial length correlations, especially in the superior and inferior retina.
Area of Science:
- Ophthalmology
- Pediatric Optometry
- Retinal Imaging
Background:
- Investigating the impact of accommodation on peripheral retinal defocus in school-aged children.
- Examining these effects in children with corrective glasses, both before and after cycloplegia.
Purpose of the Study:
- To understand how accommodation influences peripheral retinal defocus in school-age children.
- To analyze changes in peripheral retinal defocus after cycloplegia in relation to myopia severity and age.
Main Methods:
- Recruited 69 children (7-12 years) with refractive errors from +1.75 D to -9.75 D.
- Measured peripheral retinal defocus values (RDV) using multispectral refraction tomography (MRT) before and after cycloplegia.
- Analyzed RDV in various retinal areas and correlated them with axial length and myopia severity.
Main Results:
- Significant inferior retinal defocus variations were observed before cycloplegia based on myopia severity and age.
- After cycloplegia, multiple retinal areas showed significant differences with myopia severity, but not age.
- Retinal defocus shifted towards hyperopic post-cycloplegia, with superior and inferior retinal defocus correlating differently with axial length.
Conclusions:
- Demonstrated varied peripheral retinal defocus distribution across different retinal areas in children.
- Confirmed that cycloplegia can induce peripheral retinal defocus.
- Highlighted that accommodation alterations influence peripheral retinal defocus in school-aged children.
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