导致近视最大的因素是缺乏户外活动。其实,暴露在日光下有助于视网膜释放一种降低眼球轴长增速的化学物质。——《经济学人》说,中国近视的孩子多是因为他们中午午睡而不是在外面玩耍,而且孩子年龄越大待在室内的时间越长尽劫波兄弟在,相逢一笑泯恩仇。——鲁迅 The biggest factor that causes myopia is the lack of outdoor activities. In fact, exposure to sunlight helps the retina to release a chemical that slows eye growth. - “Economist” said that many Chinese children with myopia because of their nap at noon rather than playing outside, and the older the child to stay indoors for a long time robbery brothers, come back and smile. - Lu Xun