keratomalacia

1. In the past trachoma, keratomalacia and other infectious diseases and malnutrition were responsible for blindness, but now its main causes are cataract, glaucoma, etc.
   失明原因也发生了明显改变，由以沙眼、角膜软化等传染性和营养不良1生眼病为主，变为由白内障、青光眼为主。
2. The primary cause of bilateral blindness was cataract, the others were hereditary eye diseases, keratomalacia, ametropia, abnormalities of the optic nerve, etc.
   致盲原因，白内障占首位，其次为遗传性眼病、角膜软化症、屈光不正、视神经病等。

noun

1. softening and drying and ulceration of the cornea resulting from vitamin A deficiency