我们对1986年入学的本科生视力进行四年追踪观察,并对其学习环境进行采光照明情况调查,从中探讨近视眼的发生和发展规律,为做好大学生视力保护提供参考资料。对象:1986年入学的中国医科大学本科生401名,其中男156人,女245人。方法:1986年～1989年每年秋季对该401名学生进行定期视力检查。采用《标准对数视力 We undertook a four-year follow-up observation of the undergraduates’ vision of enrollment in 1986, and investigated the lighting conditions of their learning environment, and discussed the occurrence and development patterns of myopia, and provided reference materials for the protection of university students’ vision. Subject: 401 undergraduate students of China Medical University enrolled in 1986, of whom 156 were men and 245 were women. METHODS: Regular eye exams were performed on 401 students each fall from 1986 to 1989. Adopting "standard logarithmic vision