根据临床资料统计,小学三年级是近视眼的高发期。绝大多数儿童近视眼始于8～9岁。为何8～9岁时容易发生近视眼呢?主要与以下因素有关。8～9岁是儿童生长过程中的第二个快速发育期。在此期间,儿童的头颅与颌面部快速发育,眼眶的深度增加,眼睛前后轴长也增 According to clinical data statistics, third grade primary school is the high incidence of myopia. The vast majority of children's myopia began in 8 to 9 years old. Why 8 to 9 years old prone to myopia? Mainly related to the following factors. 8 to 9 years old is the second rapid development of children in the growth process. During this period, the child's skull and maxillofacial area developed rapidly, the depth of the orbit increased, and the axial length of the eye increased