这三种病的发生原因,根据最近深一步的研究,和日常食物中的维生素甲有关,尤其是冬季。所必在该病的治疗上,也是广泛的应用他。一夜盲症就是一到傍晚或在暗处,则视力障碍,什么也看不见,眼前雾黑 The causes of these three diseases, according to a recent deep study, relate to vitamin A in daily foods, especially in winter. He must be in the treatment of the disease, but also a wide range of applications. Blind night is one night to the evening or in the dark, the visual impairment, can not see anything, the immediate fog