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为探讨小学生视力低下的发展规律 ,并为采取防治措施提供科学依据 ,本文对某实验小学学生 1992～ 1999年 8年视力状况进行了分析 ,现将结果报道如下。1 资料来源与方法1.1 资料来源 :本文所用资料来源于 1992～ 1999年湖塘实验小学健康检查的视力监测统计资料。每学年视力检?
In order to explore the development of low vision of primary school students and to provide scientific evidence for prevention and control measures, this paper analyzes the visual acuity of an experimental primary school student from 1992 to 1999 for eight years. The results are reported as follows. 1 Sources and Methods 1.1 Source: The data used in this paper from 1992 to 1999 Hutang Experimental Primary Health Check vision monitoring statistics. Visual examination every school year?