我校是重点中学 ,学生来自于县、各乡、镇、场初中。 1996～1999年我校对初中一至三年级全体在校学生进行了视力检查 ,共检 40 5 3人次。结果表明 ,1996～ 1999年学生视力低下率上升。女生视力低下率明显高于男生 (表 1)。表 1　新源县县六中 1996～ 1999年男女生视力检测结果 Our school is a key middle school. Students come from counties, townships, towns, and middle schools. From 1996 to 1999, our school conducted a visual inspection of all the students in grades 1 to 3 of junior high school. A total of 405 people were examined. The results show that the percentage of students with poor eyesight increased from 1996 to 1999. Girls’ visual acuity is significantly higher than that of boys (Table 1). Table 1 Visual acuity test results for boys and girls from 1996 to 1999 in Xinyuan County