Abstract: Objective To investigate the situation and main risk factors of poor eyesight in elementary and secondary school students in Shushan district, Hefei City，and provide evidences for making out prevention strategies. Methods By randomization cluster sampling method, the classrooms from Grade 4 of elementary schools to Grade 3 of high schools in eight schools were selected monitor the environment of classrooms, and the questionnaires-poor vision investigation form for primary and middle school students was completed at the same time. Results The rate of poor eyesight at elementary and secondary school students in Shushan district was 60.08%. It increased significantly with the rising of daily short-distance reading time, daily time spent on homework，the application time of projection instrument in classes，and the frequency of reading in strong light . In contrast, it decreased gradually with the rising of daily time spent on physical exercise and sleeping, the frequency of changing seat and eye exercise, the consumption of fruit and vegetables or food enriched with vitamin A. Conclusion The rate of poor eyesight at elementary and secondary school students in Shushan district was higher than national average rate. The school should strengthen the anti-myopia knowledge propaganda, and parents should help their children to develop good living and studying habits to create favorable environment for eye health for them.

Key words: School heath, Poor eyesight rate, Elementary and secondary school students, Analysis