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为了观察正视眼学生在学习日中学习负担对眼调节力的影响,以及教室照度水平与眼调节力变化的关系,为此选择一所中学初中各年级及高一部分班级的正视眼学生273名作为研究对象。被测班级当日课程内容,均为6节课,除初一三个班下午末节为自习课外,其余课程均为视听交替过程。眼调节力每眼测一天,共测三次,即上午一节前,四
In order to observe the impact of learning burden on the regulation of eyes and the relationship between the level of illumination in the classroom and the changes of eye accommodation power, we selected a total of 273 eyepieces of each grade in junior high school and a higher part of classes Research object The contents of the classes tested the same day, are 6 classes, except for the first three classes at the end of the afternoon for self-study classes, the rest of the courses are audio-visual alternately. Eye regulation power of each day measured a total of three times the test, that is, a quarter ago, four