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为了解中学生视力情况,提供可行的综合防治措施,于1995年10～12月对全县城乡34处中学校的30622名在校学生进行了视力现状调查,报告如下:1 调查对象与方法全县城乡在校中学生均为本次调查对象,按照常规方法检查视力,凡单眼或双眼视力不足5.0者为视力减退(其中4.7～4.9为轻度,4.5～4.6为中度,4.0～4.4为重度)
To understand the situation of secondary school students to provide feasible comprehensive prevention and control measures, from October to December 1995, the county’s 34,240 middle school students in urban and rural areas of the current survey of 30,222 students were reported as follows: 1 surveyed objects and methods of the county urban and rural areas Middle school students in this survey are all subjects, according to the routine inspection of vision, visual acuity less than 5.0 monocular or binocular vision for those with visual acuity (4.7 to 4.9 for mild, 4.5 to 4.6 for the moderate, 4.0 to 4.4 for the severe)