Myopia among Children in Wuzhishan City of Hainan Province
- VernacularTitle:海南省五指山市青少年屈光不正的流行病学研究
- Author:
Qian TAN
1
;
Liang ZHANG
1
;
Hui-yu GUO
2
;
Cao JIAO
2
;
Xing-wu ZHONG
2
;
Li-na LIU
2
;
Dan-yang WANG
3
Author Information
1. The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518000, China
2. Hainan Eye Hospital, Zhongshan Ophthamic Center, Sun Yat-Sen University// Hainan Key Laboratory of Ophthalmology, Haikou 570311, China
3. The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518000, China; Hainan Eye Hospital, Zhongshan Ophthamic Center, Sun Yat-Sen University// Hainan Key Laboratory of Ophthalmology, Haikou 570311, China
- Publication Type:Journal Article
- Keywords:
prevalence of myopia;
cross-sectional study;
relevant factors
- From:
Journal of Sun Yat-sen University(Medical Sciences)
2020;41(3):493-500,F3
- CountryChina
- Language:Chinese
-
Abstract:
【Objective】 To investigate the prevalence of myopia in children from kindergarten to high school in Wuzhishan city, Hainan province, and to investigate the associated factors. 【Methods】 Cross-sectional study. A total of 17 948 children from 24 educational agencies(including 8 kindergartens and 16 primary and middle schools ) were included in the study using cluster sampling method. Totally 15 307 children were actually surveyed, with a response rate of 85.29%. All participants underwent ophthalmic evaluation including visual acuity, slit lamp examination and refraction without cycloplegia using auto refractor. Chi-square test was used to compare the prevalence of myopia between different grades, regions and between gender. 【Results】 The prevalence of myopia in kindergarten, grade1-3 in primary school, grade 4-6 in primary school, junior high school and high school was: 1.8%, 9.6%, 17.7%, 28.5%, 57.1% respectively, which showed an obvious increasing tendency(χ2 = 1 707.74, P < 0.001). There was no statistical significant differences in myopic prevalence between Han, Li and Miao ethnic groups in kindergarten(χ2 = 2.221, P = 0.426) and high school (χ2 = 1.197, P = 0.550), but there was a differences in myopic prevalence between the three ethnic groups from grade 1-3 of primary school to junior high school(χ2 = 28.908, 6.502, 19.684, P = 0.000, 0.039, 0.000). The prevalence of myopia among girls was higher than that of boys(χ2 = 214.19, P < 0.001), and the chance of short-sightedness in girls was 2.71 times than that of boys(OR = 2.71, P < 0.001) . 【Conclusions】 The overall myopic prevalence of children in Wuzhishan City was 18.4%, and the prevalence of myopia increased with age. No significant difference of myopic prevalence was found among Han, Li and Miao ethnics in kindergarten and high school, and the myopic prevalence among girls was significantly higher than that of boys.
