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视力低下是学生中常见的健康缺陷。为了解、探索视力低下者的屈光状态及其规律,为预防和治疗学生近视眼的效果评价提供科学依据,故进行本次调查。资料来源与方法本次调查对象为沈阳市铁西区八八年普通高等学校4936名考生中,患有眼病(含弱视)的考生除外,其余以随机抽样的方法,共抽取531名考生,计1062只眼。除1.0以上视力213只眼外,其余849只眼为本次调查对象。根据普通高等学校体检标准,用E字型国际标准远视力表检测裸眼视力和对视力低于1.0者以凹透镜矫正到1.0视力的屈光度。按视力低下一般的分档标准0.9-0.7为轻度,0.6～0.4为中度,0.3以下为重度。根据屈光度的临床分档标准为-3.00D以下(含一3.00D)为轻度近视,大于3.00D至一6.00D以下为中度近视,超过一6.00D以上则为重度近视。结果与分析本次调查结果见附表
Low vision is a common health problem among students. To understand and explore the refractive status of the person with low vision and its laws, and provide scientific basis for the evaluation of the prevention and treatment of myopia in pupils, this investigation was conducted. Sources and Methods The survey was conducted among 4936 candidates in the 1989 colleges and universities in Tiexi District, Shenyang, except for those with eye diseases (including amblyopia). The rest were randomly sampled and 531 candidates were selected. 1062 eyes. Except for 213 eyes with visual acuity of 1.0 or more, the remaining 849 eyes were the subject of the survey. According to the physical examination standards of ordinary colleges and universities, using the E-shaped international standard far vision chart to detect the uncorrected visual acuity and the visual acuity of less than 1.0 were corrected with a concave lens to 1.0 vision diopter. According to the low standard of sight, the general standard of classification is 0.9-0.7, mild, 0.6-0.4 is moderate, and 0.3 or less is severe. According to the standard clinical refraction of -3.00D (including a 3.00D) for mild myopia, more than 3.00D to 6.00D for moderate myopia, more than a 6.00D above for severe myopia. Results and analysis The results of the survey are in the attached table.