Proportion and characteristic of emmetropia in schoolchildren aged 6-11y:the Shenzhen elementary school eye study
作者机构：Department of Ophthalmologythe Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen 518107Guangdong ProvinceChina Scientific Research Centerthe Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen 518107Guangdong ProvinceChina State Key Laboratory of OphthalmologyZhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou 510060Guangdong ProvinceChina
出 版 物：《International Journal of Ophthalmology(English edition)》 (国际眼科杂志（英文版）)
年 卷 期：2020年第13卷第12期
页 面：1983-1989页
核心收录：
学科分类：1002[医学-临床医学] 100212[医学-眼科学] 10[医学]
基 金：Supported by the National Natural Science Foundation of China for Youth(No.81500755)
主 题：axial length corneal radius of curvature myopia emmetropia children
摘 要：AIM:To investigate the proportion and characteristic of emmetropia in schoolchildren aged 6-11,especially estimate the normal value of ocular biometric parameters of ***:A population-based cross-sectional study was conducted on children aged 6-11 y in ***,2386 schoolchildren from two primary schools were *** axial length(AL)and the corneal radius of curvature(CRC)were measured by partial coherence laser *** refraction and refractive astigmatism(RA)was measured using *** axial length-to-corneal radius of curvature ratio(AL/CRC),corneal astigmatism(CA)and spherical equivalent refraction(SER)were ***:The proportion of emmetropia in elementary school students was 41.30%.This percentage decreased gradually from 6 to 11 years of age and decreased rapidly after 9 years of *** mean and 95%CI of each parameter were provided for boys and girls aged 6 to 11 years of age with emmetropia according to each age *** change trend of parameters of boys and girls are *** 7 years of age,the AL of non-emmetropia started to increase faster than that of *** change trend of AL/CRC was the same as that of *** other parameters tend to be stable after 7 years of ***:The age of 7-9 is an important period for the changes of refractive state and ocular biometric parameters of primary school students,and it is a special focus period for children myopia *** normal value and variation of ocular biometric parameters of emmetropia can provide the basis for the clinical judgment of whether or not children’s ocular biometric parameters obtained by single measurement and changes obtained by multiple measurements are abnormal.
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