中山市2006～2007年中小学生近视调查分析

Objective To estimate the prevalence and correlative factor of myopia in primary and middle school students in Zhongshan City. Methods An epidemiological survey was carried out by Zhongshan SuHuaChan hospital, including three schools in town, three schools in urban, apply question investigation and retinoscopy. Results In this investigation, there were 9379 persons, the prevalence of myopia (spherical equivalent, SE＞-0.50D) was 58.03%, it increased from 8.04% (first grade in primary school) to 86.68% (latest grade in senior middle school). There was no difference of the prevalence of myopia between in town primary school and in urban primary school (P＞0.05), in junior middle school it was higher in urban than in town (P＜0.01), it was higher in graduation class than in non-graduation class (P＜0.05 in town, P＜0.001 in city). In this investigation it showed that eyes exercise had not effect upon preventing myopia from increasing (P＞0.05). Total time reading in one day, time reading in one time, time reading outside of class time was close correlative to the prevalence of myopia; correlation coefficients were 0.995, 0.992 and 0.999, respectively. Conclusions The prevalence of myopia is high in primary and middle school in Zhongshan City, and it increases yearly, it is important that relieve study burden of students to prevent myopia from increasing.

Myopia investigation of primary and middle school students in zhongshan City from 2006 to 2007