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Myopia among school students in rural China (Yunnan)
Author(s) -
Qian DengJuan,
Zhong Hua,
Li Jun,
Niu Zhiqiang,
Yuan Yuansheng,
Pan ChenWei
Publication year - 2016
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/opo.12287
Subject(s) - demography , medicine , confidence interval , odds ratio , ethnic group , socioeconomic status , logistic regression , multivariate analysis , optometry , pediatrics , population , environmental health , sociology , anthropology
Purpose We described the prevalence and associated factors of myopia and high myopia in school children of different ethnicities in a rural community in Yunnan province, China. Methods A total of 7681 (93.4%) primary and secondary school students aged 5–16 years in Mangshi participated in this study. Cycloplegic refraction was performed using an auto‐refractor. Information regarding demographic factors, socioeconomic status and lifestyle‐related exposures were collected using a questionnaire. Multivariate logistic regression models were fitted to estimate the risk factors for myopia and high myopia. Results The overall prevalence of myopia and high myopia was 39.1% (95% confidence interval [CI]: 38.0, 40.2) and 0.6% (95% CI: 0.4, 0.8) in this study. Myopia prevalence increased significantly with increasing age ( p for trend <0.001). Girls were more likely to have myopia compared with boys ( p < 0.001). In multivariate analysis, the presence of myopia was associated with increasing height (odds ratio [OR] = 1.02; 95% CI: 1.01, 1.03), computer use (OR = 1.17; 95% CI: 1.03, 1.32), having myopic father (OR = 1.56; 95% CI: 1.24, 1.94), having myopic mother (OR = 1.33; 95% CI: 1.08, 1.63), and increasing time on reading (OR = 1.18; 95% CI: 1.09, 1.28) after adjusting for age, sex and ethnicity. Conclusions Nowadays myopia but not high myopia is prevalent among school children in rural China. Significant ethnic differences in myopia prevalence were not observed. A significant ‘cohort effect’ of myopia previously observed in urban cities had occurred in rural communities in China.