nyctalopia

Have the person of nyctalopia, what is devoid vitamin? ? ?

患夜盲症的人，缺乏的维生素是什么？？？

The vitamin A in Chinese cabbage juice, can promote cheeper to development grows and prevent nyctalopia.

白菜汁中的维生素a，可以促进幼儿发育成长和预防夜盲症。