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那曲镇位于海拔4500米以上的西藏北部高原,是藏北地区中,小学生最多的城镇。为掌握高原牧区中、小学生的视力状况及其变化规律,我们于1986年11月下旬至12月上旬对那曲镇五所中、小学校的1810名学生的视力进行了调查,现将结果报告如下。1 对象与方法1.1 对象:选择了那曲地区小学、那曲地区一小、二小、那曲县完小和那曲地区中学五所学校的1810名学生。1.2 方法:使用E字型国际灯光视力表,对小年龄儿童和初次受检者先进行训练,避免因不熟悉字标和表达方法而影响资料的真实性。视力表放置高度以及与被检者距离都按常规进行。
Nagqu Town is located at an altitude of 4,500 meters above the plateau in northern Tibet, is the largest town in northern Tibet. In order to understand the visual acuity and changes of primary and secondary school students in the pastoral areas of the plateau, we surveyed 1810 students from 5 primary and secondary schools in Nagqu from late November to early December 1986, and the results are reported as follows. 1 Subjects and Methods 1.1 Subjects: 1810 students from five schools in Nagqu District Elementary School, Nagoya Elementary School, Nagqu District, Nagqu Elementary School and Nagqu Region Secondary School were selected. 1.2 Methods: The use of E-shaped international visual acuity chart for young children and first-time subjects to conduct training to avoid unfamiliar with the standard and expression of information and the authenticity of the data. The height of the eye chart and the distance to the subject are all routine.