目的探索4 ~6岁视力低常儿童的屈光状态及其分布规律。

Objective To evaluate diopter state and its distribution of children with subnormal vision at 4-6 years.

youdao

目的探索4 ~6岁视力低常儿童的屈光状态及其分布规律。

Objective To evaluate diopter state and its distribution of children with subnormal vision at 4-6 years.

youdao