石家庄市十二中学生视力下降及原因的统计调查分析

An Analysis of Statistical Investigation of Causes Resulting in Poor Sight of the Students at No.12 Middles School of Shijiazhuang

通过对石家庄市十二中 16 5 0名中学生视力情况的调查 ,分析学生视力下降的原因 ,并提出预防措施及建议。

The paper is aimed at analyzing the causes resulting in poor sight of 1650 students at NO.12 middle school of shijiazhuang and putting forward measures and suggestinos for the protection from students' poor sight.