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为积极开展学生视力保护工作，射阳县合兴乡卫生院于１９９８年９月对全乡１５所小学、３所初中４５７７名学生进行了视力调查，现将调查结果报告如下。１调查对象及方法１．１调查对象与方法采用Ｅ字标准对数灯光视力表箱，由专业人员对全乡１５所小学，３所初级中学所有在校?
In order to actively carry out the vision protection work of students, Hexing County Hexing Township Health Center conducted a visual inspection of 15 pupils in 15 elementary schools and 3 junior high schools in September 1998. The results of the investigation are reported below. 1 Survey objects and methods 1.1 Survey objects and methods E-standard logarithmic light vision chart boxes are used by professionals in 15 primary schools and 3 junior high schools in the township.