本文收集本区1972～1985年以来中、小学生视力检查资料,经统计处理后,其视力不良规律基本与文献报道一致。1972～1977年,中、小学生视力不良率很稳定,平均年增长速度为0～0.75%。1978年起,各学年阶段视力不良率均有升高趋势,小学、初中和高中的视力不良率平均每年增长1.21%、5.07%和6.84%。历年视力不良程度变化的趋势与视力不良率有明显的相关关系。视力不良率与重度视力不良比重的相关系数小学为0.8457、初中为0.7987、高中为0.8427。当视力不良率每增加1%时,小学、初中和高中的重度视力不良比重 This article collected from 1972 to 1985 in primary and secondary visual acuity test data, after statistical processing, the poor visual acuity consistent with the literature reported. From 1972 to 1977, the rate of poor eyesight among primary and secondary school students was very stable, with an average annual growth rate of 0-0.75%. Since 1978, the rate of poor eyesight in all academic years has been on the rise. The rate of poor eyesight in primary, middle and high schools has increased by an average of 1.21%, 5.07% and 6.84% annually. Over the years the trend of poor visual acuity and visual impairment rate has a clear correlation. The correlation coefficient between the rate of poor eyesight and the proportion of bad eyesight was 0.8457 in primary school, 0.7987 in middle school and 0.8427 in high school. When the rate of poor vision increased by 1% each time, primary, junior high school and high school severe acuity bad proportion