以往认为,除少数遗传性高度近视眼外,一般人群幼儿的眼睛都具有一定的屈光度远视,这种远视要随着年龄增大,进入中学后,再逐渐演绎成正视眼或近视眼。但据我们近年的观察,从儿童时代就发生近视眼的人数在逐年增加,城市儿童比乡村儿童更多一些,甚至有些未进幼稚园或刚进幼稚园的,就已经有了近视眼。我们曾对一些幼儿近视眼患者的家庭进行调查,询问其父母的眼病史,他们中的绝大多数并没有近视,或仅有一方在进入 In the past that, in addition to a small number of hereditary high myopia, the general population of young children’s eyes have a certain degree of diopter hyperopic, hyperopia to increase with age, after entering high school, and then gradually deduced into the eyes or myopia. However, as we have observed in recent years, the number of children with myopia since childhood has been increasing. Urban children have more children than rural children. Even some who have not yet entered kindergartens or have just entered kindergartens already have myopia. We have conducted a survey of families of young children with myopia and asked their parents about the history of ophthalmology, the vast majority of whom did not have myopia, or only one of them entered