论文部分内容阅读
近年来,在青少年、儿童中,视力异常患者呈迅猛增加的趋势。以北京东城区一所小学的情况为例,该校一年级刚入学的三个班中90％以上的学生都是视力异常。 少年儿童的正常视力究竟应该是多少呢?刚生下的婴儿,视力较弱,其眼轴皆短,均为远视眼,以后眼球逐渐发育,视力也逐渐增加。孩子在8岁前眼球发育旺盛,8岁后减慢,直至25岁左右基本定型。常态下孩
In recent years, among adolescents and children, patients with abnormal visual acuity show a rapid increase trend. Take the case of a primary school in Dongcheng District, Beijing as an example. Over 90% of the students in the first grade of the first grade of the school are all visually-impaired. Children should be what the normal visual acuity should be? Newborn infants, vision is weak, its axial length is short, are hyperopia, after gradual eyeball development, visual acuity also gradually increased. Children in the eye before the age of 8 strong development, slow down after the age of 8, until the 25-year-old basic stereotypes. Normal child