AIM:To analyze the visual acuity and diopter of students at different learning stages in Baoshan District, Shanghai.

METHODS: By stratified random sampling, 3002 students were randomly selected from 14 grades of Baoshan from middle class in kindergarten to senior three in middle school. Chi-square analysis and Kruskal-Wallis H test were used to compare the difference of myopia rate, refractive error rate and visual impairment among students at different learning stages and gender.

RESULTS: With the increase of learning stage, the rate of poor eyesight increased from 18.52% to 87.12%. There were differences in the rate of poor eyesight among different learning stages(P<0.05). There were differences in the proportion of poor eyesight between boys and girls in junior and senior middle schools(P<0.05). There were differences in the rate of poor eyesight with different degrees(P<0.01). The proportion of myopia in different learning stages was different(P<0.05).

CONCLUSION:The rate of poor eyesight in students is high in Baoshan District. Attention should be paid to eye care of students.