Prevalence of Refractive Errors in Tibetan Adolescents
Xuehan Qian, Beihong Liu, Jing Wang, Nan Wei, Xiaoli Qi, Xue Li, Jing Li, Ying Zhang, Ning Hua, Yuxian Ning, Gang Ding, Xu M, Binbin Wang
The prevalence of adolescent eye disease in remote areas of the Qinghai-Tibet Plateau has rarely been reported.
To understand the prevalence of common eye diseases in Tibet, ocular-disease screening on students from primary and secondary schools in Tibet were performed and compared to the prevalence in the Central China Plain.
The refractive status of students was evaluated with a Spot™ vision screener. The test was conducted three or fewer times for both eyes of each student and results with best correction were recorded.
A total of 3246 students from primary and secondary schools in the Tibet Naidong district were screened, yielding a refractive error rate of 28.51%, which was significantly lower than that of the plains group (56.92%).
In both groups, the prevalence of refractive errors among females was higher than that among males.
The study that Tibetan adolescents had a lower prevalence of refractive errors than did adolescents in the plains area, which may be related to less intensive schooling and greater exposure to sunlight.