论文部分内容阅读
本文报道了25000余名中小学生连续5年的视力减退情况:1981年视力不良率为5.69％,1982年为5.53％,1983年为8.28％,1984年为9.60%。表现出中小学生视力不良率逐年上升的趋向。
This paper reports the loss of vision of more than 25,000 primary and secondary school students for five years in a row: the rate of poor vision was 5.99% in 1981, 5.33% in 1982, 8.28% in 1983 and 9.60% in 1984. Showing the tendency of the rate of poor eyesight of primary and middle school students rising year by year.