Investigative Science
Analysis of eye screening data in primary and middle school students from 2019 to 2021
Hu Qinrui, Wang Yi, Wang Haiyan, Tao Xinge, Hai Huaqiao, Li Yang, Li Qiyuan, Li Xiaoxin
Published 2023-01-10
Cite as Chin J Exp Ophthalmol, 2023, 41(1): 69-77. DOI: 10.3760/cma.j.cn115989-20220803-00361
Abstract
ObjectiveTo analyze the data of vision acuity from primary and secondary school students in different regions in China in a screening program performed by Huaxia Eye Hospital, and to investigate the prevalence and incidence of myopia among them.
MethodsA cross-sectional study was conducted.Cross-sectional and cohort analysis of the visual acuity and refraction data of primary and secondary school students in China from 2019 to 2021 from Huaxia Eye Hospital was carried out.Myopia was defined as one eye with the uncorrected visual acuity less than 5.0 and a spherical equivalent <-0.50 D in the screening.The frequency of screening, the number of people, the distribution of vision acuity, and the distribution of myopia among subjects were compared by sexes, grades and regions, and the prevalence and incidence of myopia was analyzed.Standard logarithmic visual acuity chart was used for visual examination and automatic computerized optometry was used for refractive examination.Screening process was consistent in the study.This study protocol was approved by the Ethics Committee of Xiamen Eye Center of Xiamen University (No.XMYKZX-KY-2019-011). The written informed consent was obtained from subjects or their guardians after explaining the examination procedure, methods and purpose prior to any medical examination.
ResultsA total of 4 027 schools in 51 cities of 19 provinces covering 4.556 million people were included in the vision study.The prevalence of myopia in screening was 64.85% in primary and secondary school population generally, 54.0% in primary school, 78.18% in junior high school and 87.05% in senior high school.There were statistical differences in the prevalence of screening myopia in different education stages (χ2=100.7, P<0.001). The prevalence rate in females was higher than that in males (χ2=5 557.5, P<0.001). The incidence of myopia within a year was 18.68% in primary and secondary schools, which was 16.57% in East China, 6.07% in Central China and North China, 15.11% in Southwest and Northwest China, 9.19% in South China, and there was a statistically significant differences among them (χ2=1 200.9, P<0.001).
ConclusionsThe prevalence and incidence of myopia in primary and secondary school students are still high and vary with educational stages and regional factors.Scientific prevention and control of myopia should consider the two factors.
Key words:
Schools, primary and secondary; Vision acuity; Myopia; Prevalence; Incidence
Contributor Information
Hu Qinrui
Fujian Provincial Key Laboratory of Ocular Surface and Corneal Diseases, Xiamen Eye Center of Xiamen University, Xiamen 361000, China
Wang Yi
Department of Pediatrics, The First Affiliated Hospital of Xiamen University, Xiamen 361003, China
National Institute for Data Science in Health and Medicine, School of Medicine, Xiamen University, Xiamen 361002, China
Wang Haiyan
Fujian Provincial Key Laboratory of Ocular Surface and Corneal Diseases, Xiamen Eye Center of Xiamen University, Xiamen 361000, China
Tao Xinge
National Institute for Data Science in Health and Medicine, School of Medicine, Xiamen University, Xiamen 361002, China
Department of Endocrinology, The First Affiliated Hospital of Xiamen University, Xiamen 361003, China
Hai Huaqiao
Fujian Provincial Key Laboratory of Ocular Surface and Corneal Diseases, Xiamen Eye Center of Xiamen University, Xiamen 361000, China
Li Yang
Fujian Provincial Key Laboratory of Ocular Surface and Corneal Diseases, Xiamen Eye Center of Xiamen University, Xiamen 361000, China
Li Qiyuan
National Institute for Data Science in Health and Medicine, School of Medicine, Xiamen University, Xiamen 361002, China
Li Xiaoxin
Fujian Provincial Key Laboratory of Ocular Surface and Corneal Diseases, Xiamen Eye Center of Xiamen University, Xiamen 361000, China
Department of Ophthalmology, Peking University People’s Hospital, Beijing 100044, China
