近年来，我国青少年近视的发病率有增高趋势，在眼科门诊中，近视已成为一种常见病、多发病。广大患者及其家属要求了解有关近视知识的愿望也日益强烈。其中，人们最为关注的是：为什么有的近视一定要戴眼镜，而有的近视又可以不戴眼镜？为什么有些近视可以治好，而有些近视治 In recent years, the incidence of myopia in young people in our country has been on the rise. In the ophthalmology clinic, myopia has become a common disease and frequently-occurring disease. The vast majority of patients and their families asked to understand the desire for knowledge of myopia is also growing. Among them, people are most concerned about is: why some myopia must wear glasses, and some can not wear glasses myopia? Why some myopia can be cured, while some myopia governance