有七万多人口的仫佬族是我国少数民族之一。在广西医学院附属眼科防治组的指导和协助下,于1987年4月对仫佬族人口居住中心——罗城仫佬族自治县四把乡四把中学进行了近视眼调查,结果报告如下; 调查方法1.视力检查:采用国际标准视力表,距离为5m,分别遮盖一眼检查另一眼。2.视力减退的标准:以远视力低于 Mulam, a population of more than 70,000, is one of the ethnic minorities in our country. Under the guidance and assistance of the ophthalmology prevention and cure group attached to Guangxi Medical College, myopia investigation was carried out in April 1987 at the four middle schools in Geluo Township, Gelao Nationality Center, Luo Cheng Gelao Autonomous County. The results are reported as follows: Survey methods 1. Visual examination: the use of international standard visual acuity chart, the distance of 5m, respectively, cover one eye to check the other. 2. The standard of vision loss: far below visual acuity