一、目的要求1.使学生了解眼球的构造,明确近视眼的构造特点、物理原理及矫正方法。2.使学生理解后天性变成近视眼的原因、过程,掌握预防近视的基本方法。3.使学生真正懂得保护视力、预防近视不仅是个人生活与工作的私事,而且是我们对国家对民族应负的一份社会责任。二、教学重点1.后天变成近视的原因、过程及预防近视 First, the purpose of the requirements 1. To enable students to understand the structure of the eye, a clear feature of myopia structure, physical principles and methods of correction. 2. To enable students to understand acquired causes of myopia, the process, master the basic methods to prevent myopia. 3 so that students really know how to protect eyesight, prevent myopia is not only a personal matter of personal life and work, but also our country to the nation should bear a social responsibility. Second, the teaching focus 1 acquired causes of myopia, process and prevention of myopia