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为掌握小学生视力低下发展规律，并为防治工作提供科学依据，我们对本区10年小学生视力低下变化动态作一分析，报告如下。1材料来源全区30所小学，一年两次视力监测的统计表，经专业组审核，以28所小学无差错视力统计表为本次统计分析的本底资料。2视力变化动态2．11987－1996
In order to grasp the development of low vision of primary school students and provide a scientific basis for prevention and control work, we have made an analysis on the changes of low vision of primary school students in this area in the past 10 years. The report is as follows. 1 Materials Source 30 primary schools in the region, twice a year visual acuity monitoring of statistical tables, audited by the professional group to 28 primary errors-free visual table for the statistical analysis of the background information. 2 changes in visual acuity 2.11987-1996