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为了解我校学生在家晚自修时的照明情况,及时纠正对学生视力的不利因素,调查学生近视眼新发病例增加的原因,校领导组织力量对近视发病较多的初中同学进行了一次家庭夜访(晚上六至八时半),现选择资料较完整的一百例,报告如下: 1、晚自修光照度不足50米烛光者占50％,不足100米烛光者占80％。 2、除煤油灯外,凡照明器具离点面在
In order to understand our school students at home and evening self-study of lighting conditions, timely correction of adverse visual acuity of students to investigate the reasons for the increase in new cases of students with myopia, the school leadership organization of junior high school students with more incidence of myopia conducted a family night Interview (from 6 to 8.30 pm), we now select one hundred cases with complete information. The report is as follows: 1. Candidates who self-study less than 50 meters of candle light account for 50% and those who have less than 100 meters of candle light account for 80%. 2, In addition to kerosene lamps, where lighting from the point in the face