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为了增进学生的身体健康,防治大学生的常见病,我校医院于1991年7～9月对在校的两个年级1215名学生进行视力、龋齿、沙眼患病率的调查,并分析了发病原因,提出今后改进意见。1 调查对象及方法1.1 调查对象对在校的毕业班(87级)和新生(91级),共调查1215人,其中男生961人,女生254人。1.2 调查方法1.2.1 视力调查:采用国标(GB 11533—89)标准对数视力表,视力表的表面照度均不低于100 lux。统
In order to improve the health of students and prevent the common diseases of college students, our school conducted a survey on the prevalence of vision, dental caries and trachoma in 1215 students in two grades from July to September 1991, and analyzed the causes , Put forward suggestions for improvement in the future. A survey of objects and methods 1.1 survey of graduates (87) and freshmen (91), a total of 1215 people surveyed, of which 961 boys and 254 girls. 1.2 Methods of Investigation 1.2.1 Vision Survey: The use of the national standard (GB 11533-89) standard logarithmic eye chart, acuity chart surface illumination are not less than 100 lux. System