眼部用药是治疗眼疾的一个重要用药途径。而中学生对怎样使用眼药才能使药物有效地发挥作用却一无所知。因此，对患病学生逐个进行指导，并做示范动作，十分必要。治疗中要求病变部位要有足量有效的药物浓度，并且要有一定的药物接触时间。若使用药物正确，方法得当，病程就会 Eye medication is an important route of treatment for eye diseases. However, middle school students know nothing about how to use ophthalmic drugs to make drugs work effectively. Therefore, one by one for the sick students to guide and do demonstration action, it is necessary. Treatment requires the lesion site to have adequate and effective drug concentration, and to have a certain drug exposure time. If you use the right medicine, proper method, the course will be