方法：横断面随机整群抽样研究，于2020-09/12以学校为单位抽取徐州市70所中小学校进行近视筛查。参与抽样63 488人，剔除不合格记录后，最终纳入6～18岁中小学生58 149人，并分析其不同年龄、性别、地区、近视程度下的近视及矫正情况。

结果：徐州市6～18岁中小学生筛查性近视率为49.26%，近视患病率随年龄增长呈增加的趋势(P<0.01)，近视程度随年龄增加逐渐加深，女生近视患病率高于男生(53.70% vs 45.67%，P<0.01)，城市中小学生近视患病率高于乡镇(55.40% vs 45.10%，P<0.01)。框架眼镜矫正率为31.11%，足矫率为60.23%，同时矫正率随着年龄的增长逐渐增高(P<0.01)，女生矫正率高于男生(32.45% vs 29.84%，P<0.01)，但女生足矫率却低于男生(56.60% vs 63.98%，P<0.01)。城市中小学生矫正率和足矫率均高于乡镇(46.50% vs 18.33%，62.20% vs 56.07%，P<0.01)。

结论：徐州市2020年中小学生筛查性近视率不容乐观，中小学生近视矫正率及矫正合格率较低，推测是近视进展的原因之一。

METHODS: A cross-sectional cluster sampling study was designed. The total number of screened students was 63 488 in 70 schools from Xuzhou city in this study from September 2020 to December 2020. After excluding the unqualified data, 58 149 students aged 6-18 years were included to analyse. The prevalence of screening myopia, refractive correction and full correction with the aspect of different ages, genders, regions and degrees of myopia were described.

RESULTS: The overall rate of screening myopia and refractive correction were 49.26% and 31.11%, respectively and both showed an increasing trend with age(P<0.01). Additionally, the degree of myopia also gradually deepened with age. For the two rates, there appeared to be higher for girls than boys(53.70% vs 45.67% for screening myopia and 32.45% vs 29.84% for refractive correction, all P<0.01). However, girls showed a lower rate than boys for full refractive correction(56.60% vs 63.98%, P<0.01), which was 60.23% totally among all the myopic students with refractive correction. The corrective and full refractive correction rate of urban primary and secondary school students are higher than that of townships(46.50% vs 18.33%,62.20% vs 56.07%, all P<0.01).

CONCLUSION:The prevalence of screening myopia among primary and middle school students was not optimistic in Xuzhou city in 2020. The rates of refractive correction and full correction were relatively low among myopic students, possibly because of the progression of myopia.