近年来中小学生课业负担普遍过重,超负荷的学习时间和过渡用眼导致学生视力低下逐年升高,为进一步了解本年度学生近视低下的发展动态情况,在2005年9月份对十师北屯高中、初中和小学部的健康体检发现,学生视力低下人数为3541人,占体检学生总数的58.91%,比去年增长了3.5%,为此我? In recent years, primary and secondary school students are generally overburdened with academic load, overloaded learning time and transitional use of eyes lead to the students ’low vision increased year by year. In order to further understand the current development of students’ low myopia, in September 2005, , Junior high and primary health examination found that the number of students with low vision was 3541, accounting for 58.91% of the total number of physical examination, an increase of 3.5% over last year, for which I?