Beijing Pinggu Childhood Eye Study: The Baseline Refractive Characteristics in 6- to 12-Year-Old Chinese Primary School Students

Frontiers in Public Health

article

Yan Li¹  Yi Xing²  Chunlin Jia³  Jiahui Ma¹  Xuewei Li¹  Jingwei Zhou¹  Chenxu Zhao¹  Haijun Zhang³  Lu Wang⁴  Weihong Wang⁵  Jia Qu⁶  Mingwei Zhao¹  Kai Wang¹  Xin Guo⁴ 

[1] Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Department of Ophthalmology, Peking University People's Hospital;School of Public Health, Institute of Child and Adolescent, Peking University;Pinggu District Primary and Secondary School Health Care Institute;Children and Adolescent Health, Beijing Center for Disease Prevention and Control;Pinggu Center for Disease Prevention and Control;School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University

关键词: primary school;    refractive error;    myopia;    cycloplegia;    ocular biometry;   

DOI  :  10.3389/fpubh.2022.890261

学科分类：社会科学、人文和艺术（综合）

来源: Frontiers

【 摘 要 】

Purpose To report the design and baseline data of a 3-year cohort study in Beijing Pinggu District primary school students in China after COVID-19. Methods Noncycloplegic and cycloplegic spherical equivalent refraction (SER) were measured, ocular biometry, including the axial length (AL), anterior chamber depth (ACD) and corneal power (CP), were collected before cycloplegia. Corneal radius (CR), AL-to-CR ratio, and lens power (LP) were calculated. Results Among the 4,806 (89.1%) eligible students (51.5% male), the prevalence of emmetropia, myopia, mild hyperopia, and mild-to-high hyperopia was 12.8, 30.8, 53.0, and 3.3% after cycloplegia, respectively. Myopia increased from 2.5% in 6- to 71.6% in 12-year-old students, with 9- and 10-year-olds showing the most prominent increases. The median of cycloplegic SER was 0.50 (IQR = 1.63), and the noncycloplegic SER was −0.38 D (IQR = 1.50), which is more negative than the cycloplegic refraction. The mean AL increased with age, from 22.46 ± 0.70 mm to 24.26 ± 1.07 mm. The ACD increased from 3.38 ± 0.28 mm to 3.70 ± 0.30 mm, and the AL-to-CR ratio increased from 2.91 ± 0.08 to 3.12 ± 0.13 between 6- and 12-year-old students. AL, CR and LP explained the SER variance with R 2 of 86.4% after adjusting the age and gender. Conclusions and Relevance The myopia prevalence since emergence of COVID-19 rapidly increased from 6- to 12-year primary school Chinese children, especially after 7 years of age. The non-cycloplegia SER overestimated the prevalence of myopia, and the cycloplegic SER is a more accurate and reliable method to assess the prevalence of refractive status.

【 授权许可】

CC BY