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为摸清我校历届学生视力低下率及比率的动态规律,现将我校13届学生在校三年的视力低下情况作一动态分析。1 方法按国际视力表标准要求,每学期给学生查裸眼视力,并配合近视力法和插片以排除其它屈光不正及眼病。凡单眼或双眼视力不足1.0者均为视力低下,分为轻度(0.9～0.7)中度(0.6～0.4)、重度(0.3以下)。
In order to find out the dynamic laws of the low vision rate and the ratio of the students of our school, we will make a dynamic analysis of the low vision of the students of our school for three years. 1 Methods According to the standard of the international visual acuity chart, students are required to investigate uncorrected visual acuity every semester, and cooperate with near vision and insertion to exclude other refractive errors and eye diseases. All eyes with 1.0 or less eyesight were visually impaired and classified as mild (0.9-0.7) moderate (0.6-0.4), severe (0.3 or less).