AIM: To analyze the epidemic status of the poor sight in middle school students in Changsha, and to propose basis for the strategy and measure of preventing poor sight.

METHODS: A total of 16 843 students, selected from 12 junior high schools and 12 senior high schools in 6 districts in Changsha city with stratified-cluster sampling method, were brought into the eyesight screening. Light visual chart case was used to test eyesight. Database was established by Epidata 3.20 software and analyzed by SPSS 18.0 statistical software.

RESULTS: Poor sight relevance ratio in middle school students in Changsha city was 71.44%, and poor sight relevant ratio in female students(74.47%)was higher than that in male(68.20%), and the difference was statistically significant(χ²=80.79,P<0.01). In general, poor sight relevance ratio was increased with the growth of age. In the same age group, poor sight relevant ratio in female students was higher than that in male. The relevance ratio of mild poor sight, middle poor sight and severe poor sight was 8.64%, 22.35% and 40.44%, respectively. The poor sight relevance ratio in different age groups was discrepant, and the difference was statistically significant(P<0.01).

CONCLUSION: It is a social engineering to protect the middle school students' sight, so we should concentrate effort from family, school and social guidance together, and then come into comprehensive measures.