to discover the growing regularity and dynamic trend of weak eyesight of primary and middle school students.
探讨和掌握深圳市福田区中小学生视力低下的发展规律和动向。
the rate of weak eyesight ascended as study phase increased. the highest rate was 77.72% that appeared among students of grade 3 of senior high school;
各年度学生视力低下率均随学习阶段的升高而上升,尤以高三年级组学生视力低下率为最高,平均达77 72 % ;
[objective] to discover the growing regularity and dynamic trend of weak eyesight of primary and middle school students.
[目的]探讨和掌握深圳市福田区中小学生视力低下的发展规律和动向。