每天在课间操时，许多中小学生都坚持做眼保健操。这对保护眼睛、预防近视是有好处的。但是，不少学校的学生在做眼保健操之前，从来不洗手。这不但没有完全达到保护眼睛的目的，而且有时还会因此患上眼病。有关资料表明，中小学生患沙眼率达１０％～５０％。在红眼病流行季节 Every day during the class exercises, many primary and secondary students insist on doing eye exercises. This is good for protecting the eyes and preventing myopia. However, many school students do not wash their hands before doing eye exercises. This not only did not completely reach the goal of eye protection, and sometimes also suffer from eye disease. The data show that primary and secondary trachoma rate of 10% to 50%. In the pink eye epidemic season