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本文对同一年龄段的大学生在１９８５年和１９９４年两个不同时期视力低下情况和原因进行了调查和分析。结果表明，１９９４年大学生视力低下发生率比１９８５年上升了１５．０９％，年增长率１．５１％，一般以轻度近视增加为主，两个时间阶段比较Ｐ＜０．０１，其中以男性和农村大学生增加较高，分别为１７．７％和１８．５３％，其原因与学习负担、照明条件、用眼习惯、身体素质等因素有关，并就防治措施提出了建议。
This article investigates and analyzes the situation and causes of under-vision of college students of the same age in two different periods from 1985 to 1994. The results showed that the prevalence of under-sight of college students in 1994 increased by 15.09% compared with that of 1985, and the annual growth rate was 1.51%, which was mainly increased with mild myopia, P <0.01 in two time periods Male and rural college students increased by 17.7% and 18.53% respectively. The reasons were related to learning burden, lighting conditions, eye habits, physical fitness and other factors, and put forward suggestions on prevention measures.