论文部分内容阅读
为了解和掌握广州市学生视力状况和变化特点、规律,为防治工作提供科学数据,开展学生视力保护,提高学生健康水平,我们于1980年3月～1985年12月连续六年对本市三所中小学学生82470人次进行了定点视力监测工作。现总结如下。一、调查对象和方法 1.对象:选择本市具有代表性的重点中学和普通中学各1所、小学1所,检查全校学生共82470人次。 2.方法:采用国际视力表,人工照明视力箱,表面照度均在500勒克斯以上。视力1.0为正常,0.9以下为视力不良,分轻度(0.9～0.7)、中度(0.6～0.4)、重度(0.3以下)三档。统
In order to understand and grasp the sight of students in Guangzhou City and changes in the characteristics and patterns of scientific data for prevention and control work to carry out the protection of students’ eyesight and improve the health of students, we March 1980 ~ December 1985 six consecutive years to the city three 82,470 primary and secondary school students carried out fixed-point vision monitoring. Now summarized as follows. I. Subjects and Methods 1. Subjects: One representative primary and secondary high school and one primary school were selected in this Municipality. A total of 84,470 students were examined throughout the school. 2. Methods: The international visual acuity chart, artificial lighting, visual acuity box, surface illumination are above 500 lux. Visual acuity 1.0 was normal, the following 0.9 is poor vision, sub-mild (0.9 ~ 0.7), moderate (0.6 ~ 0.4), severe (0.3 below) third gear. System