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本文对南溪县中学生1987～1992年视力监测资料进行了分析。结果表明各年视力不良率高中均高于初中(P<0.05),初中最低为25.39％,最高为37.46％;高中最低为54.15％,最高达63.39％。经过两年学习后,初三视力不良率均比入学时明显上升(P<0.05);除高中87、91两级外,高三视力不良率比入学时明显升高(P<0.05)。各年城市学生视力不良率显著高于农村学生(P<0.05)。女生高于男生.1987～1992年视力不良程度构成,其变化尚无一定规律。
This article analyzes the vision surveillance data of middle school students from 1987 to 1992 in Nanxi county. The results showed that the visually impaired rates in all years were higher than those in junior high schools (P<0.05), the lowest in junior high schools was 25.39%, and the highest was 37.46%; the lowest in high schools was 54.15%, and the highest was 63.39%. After two years of study, the rate of bad vision in the third year was significantly higher than that at the time of enrollment (P<0.05). With the exception of the high school 87 and 91 levels, the rate of bad third vision was significantly higher than that at the time of enrollment (P<0.05). The rate of poor vision in urban students was significantly higher than that of rural students in each year (P<0.05). Female students are higher than boys. The degree of poor vision in 1987 to 1992 constitutes no change.