根据广大读者的要求,我们从本期开始,在讲座栏里将有计划地从基础理论和实际应用上分别介绍生产中有害物质对机体各系统的影响。本期先请北京医学院附属三院眼科主任李凤鸣教授介绍眼睛方面问题。要怎样办好专题学术讲座,需增加哪些内容,请读者随时来信与本刊编辑部学术讲座组联系。 According to the requirements of readers, from the beginning of this issue, we will introduce in the lecture column the impact of harmful substances on the system of the body from the basic theory and practical application respectively. In this issue, Professor Li Fengming, director of the Third Affiliated Hospital of Beijing Medical College, first introduced the eye problems. How do we do a good job of academic lectures, what needs to be added, please readers at any time letter and the editorial department of academic journal group contact.