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为了探索青少年视力不良的发病规律及特点 ,笔者于１９９５年１０月～１９９７年１０月对鹿寨中学初中部３个班１６６名学生和高中部４个班２５５名学生进行了视力追踪观察 ,现将观察结果报告如下。１对象与方法１．１调查对象选择１９９５年秋季鹿寨中学入学新生初中部３个班?
In order to explore the incidence and characteristics of young people with poor vision, the author in 1995 October to 1997 October Luzhai Middle School junior high school three classes of 166 students and four classes of 255 high school students were observed by sight, now Observations are reported below. 1 Subjects and Methods 1.1 Survey Select the autumn of 1995 Luzhai Middle School freshmen junior high school three classes?