The hyperopia reserve in 3- to 6- years-old preschool children in North China: the Beijing hyperopia reserve research

Abstract Clinical relevance In recent years, the concept of hyperopia reserve, defined as a physiological hyperopic refractive status preceding emmetropia and myopia, has gained increasing attention. and raised awareness about myopia. This concept has become of interest to both parents and practitio...

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Main Authors: Jianing Pu, Yuxin Fang, Zhen Zhou, Wei Chen, Jianping Hu, Shanshan Jin, Xinli Liu, Lihua Wang, Jingjing Feng, Huan Tong, Shanshan Xing, Ya Xing Wang, Yonghong Jiao
Format: Article
Language:English
Published: BMC 2025-04-01
Series:BMC Ophthalmology
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Online Access:https://doi.org/10.1186/s12886-025-04008-9
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author Jianing Pu
Yuxin Fang
Zhen Zhou
Wei Chen
Jianping Hu
Shanshan Jin
Xinli Liu
Lihua Wang
Jingjing Feng
Huan Tong
Shanshan Xing
Ya Xing Wang
Yonghong Jiao
author_facet Jianing Pu
Yuxin Fang
Zhen Zhou
Wei Chen
Jianping Hu
Shanshan Jin
Xinli Liu
Lihua Wang
Jingjing Feng
Huan Tong
Shanshan Xing
Ya Xing Wang
Yonghong Jiao
author_sort Jianing Pu
collection DOAJ
description Abstract Clinical relevance In recent years, the concept of hyperopia reserve, defined as a physiological hyperopic refractive status preceding emmetropia and myopia, has gained increasing attention. and raised awareness about myopia. This concept has become of interest to both parents and practitioners. Background To report the distribution of refractive errors and ocular biometry in a large scale of preschool children in Beijing, in North China. The distribution of hyperopia reserve and its associated factors were also further investigated. Methods This study presents baseline data from Beijing Hyperopia Reserve Research (BHRR), which enrolled 2109 preschool children from 22 randomly selected kindergartens. Cycloplegic refraction was performed for all children. Hyperopia reserve was defined as a spherical equivalent refractive error (SER) greater than zero. Parents completed a questionnaire about the severity of refractive status (normal; mild myopia <-3D; moderate myopia ≥-3D and ≤-6D; high myopia >-6D) and their children’s indoor and outdoor activity times. Results The mean SER was + 1.11 ± 0.97D, and the mean axial length was 22.25 + 0.73 mm in all preschool children. The overall prevalence of myopia was 3.7%, with age-specific rates of 2.8%, 3.8%, 3.8%, and 5.2%, respectively. A total of 1932 children (91.6%) had hyperopia reserve, yet only 24.1% of children had age-adjusted normal hyperopia reserve. Regression analysis showed that maintaining hyperopia reserve was associated with sex (boy as reference, OR = 1.7, P = 0.005), mild myopic group parents (Father: OR = 1.7, P = 0.003; Mother: OR = 2.2, P < 0.001), increased outdoor activity time (OR = 1.3, P = 0.031) and reduced study time (OR = 0.8, P = 0.025). Conclusions The present study provided a comprehensive database on the refractive status and ocular biometry of preschool children aged 3–6 years in Beijing, North China. Although most children maintained hyperopia reserve, the majority had age-adjusted hyperopia reserve deficiencies. Early intervention, particularly for children with parents exhibiting severe myopia may be warranted.
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spelling doaj-art-b098e937b7be4615bcb005d8c676fb8c2025-08-20T03:10:09ZengBMCBMC Ophthalmology1471-24152025-04-0125111010.1186/s12886-025-04008-9The hyperopia reserve in 3- to 6- years-old preschool children in North China: the Beijing hyperopia reserve researchJianing Pu0Yuxin Fang1Zhen Zhou2Wei Chen3Jianping Hu4Shanshan Jin5Xinli Liu6Lihua Wang7Jingjing Feng8Huan Tong9Shanshan Xing10Ya Xing Wang11Yonghong Jiao12Beijing Tongren Hospital, Beijing Ophthalmology & Visual Sciences Key Lab, Beijing Tongren Eye Center, Capital Medical UniversityBeijing Tongren Hospital, Beijing Ophthalmology & Visual Sciences Key Lab, Beijing Tongren Eye Center, Capital Medical UniversitySchool of Biomedical Engineering, Capital Medical UniversityMaternal and Child Health Hospital of Haidian DistrictBeijing Tongren Hospital, Beijing Ophthalmology & Visual Sciences Key Lab, Beijing Tongren Eye Center, Capital Medical UniversityBeijing Tongren Hospital, Beijing Ophthalmology & Visual Sciences Key Lab, Beijing Tongren Eye Center, Capital Medical UniversityMaternal and Child Health Hospital of Haidian DistrictMaternal and Child Health Hospital of Haidian DistrictMaternal and Child Health Hospital of Haidian DistrictMaternal and Child Health Hospital of Haidian DistrictMaternal and Child Health Hospital of Haidian DistrictBeijing Tongren Hospital, Beijing Ophthalmology & Visual Sciences Key Lab, Beijing Tongren Eye Center, Capital Medical UniversityBeijing Tongren Hospital, Beijing Ophthalmology & Visual Sciences Key Lab, Beijing Tongren Eye Center, Capital Medical UniversityAbstract Clinical relevance In recent years, the concept of hyperopia reserve, defined as a physiological hyperopic refractive status preceding emmetropia and myopia, has gained increasing attention. and raised awareness about myopia. This concept has become of interest to both parents and practitioners. Background To report the distribution of refractive errors and ocular biometry in a large scale of preschool children in Beijing, in North China. The distribution of hyperopia reserve and its associated factors were also further investigated. Methods This study presents baseline data from Beijing Hyperopia Reserve Research (BHRR), which enrolled 2109 preschool children from 22 randomly selected kindergartens. Cycloplegic refraction was performed for all children. Hyperopia reserve was defined as a spherical equivalent refractive error (SER) greater than zero. Parents completed a questionnaire about the severity of refractive status (normal; mild myopia <-3D; moderate myopia ≥-3D and ≤-6D; high myopia >-6D) and their children’s indoor and outdoor activity times. Results The mean SER was + 1.11 ± 0.97D, and the mean axial length was 22.25 + 0.73 mm in all preschool children. The overall prevalence of myopia was 3.7%, with age-specific rates of 2.8%, 3.8%, 3.8%, and 5.2%, respectively. A total of 1932 children (91.6%) had hyperopia reserve, yet only 24.1% of children had age-adjusted normal hyperopia reserve. Regression analysis showed that maintaining hyperopia reserve was associated with sex (boy as reference, OR = 1.7, P = 0.005), mild myopic group parents (Father: OR = 1.7, P = 0.003; Mother: OR = 2.2, P < 0.001), increased outdoor activity time (OR = 1.3, P = 0.031) and reduced study time (OR = 0.8, P = 0.025). Conclusions The present study provided a comprehensive database on the refractive status and ocular biometry of preschool children aged 3–6 years in Beijing, North China. Although most children maintained hyperopia reserve, the majority had age-adjusted hyperopia reserve deficiencies. Early intervention, particularly for children with parents exhibiting severe myopia may be warranted.https://doi.org/10.1186/s12886-025-04008-9Cycloplegic refractionPreschool childrenHyperopia reserveMyopiaOcular biometryOutdoor activity
spellingShingle Jianing Pu
Yuxin Fang
Zhen Zhou
Wei Chen
Jianping Hu
Shanshan Jin
Xinli Liu
Lihua Wang
Jingjing Feng
Huan Tong
Shanshan Xing
Ya Xing Wang
Yonghong Jiao
The hyperopia reserve in 3- to 6- years-old preschool children in North China: the Beijing hyperopia reserve research
BMC Ophthalmology
Cycloplegic refraction
Preschool children
Hyperopia reserve
Myopia
Ocular biometry
Outdoor activity
title The hyperopia reserve in 3- to 6- years-old preschool children in North China: the Beijing hyperopia reserve research
title_full The hyperopia reserve in 3- to 6- years-old preschool children in North China: the Beijing hyperopia reserve research
title_fullStr The hyperopia reserve in 3- to 6- years-old preschool children in North China: the Beijing hyperopia reserve research
title_full_unstemmed The hyperopia reserve in 3- to 6- years-old preschool children in North China: the Beijing hyperopia reserve research
title_short The hyperopia reserve in 3- to 6- years-old preschool children in North China: the Beijing hyperopia reserve research
title_sort hyperopia reserve in 3 to 6 years old preschool children in north china the beijing hyperopia reserve research
topic Cycloplegic refraction
Preschool children
Hyperopia reserve
Myopia
Ocular biometry
Outdoor activity
url https://doi.org/10.1186/s12886-025-04008-9
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