Question

what is xerophthalmia, Nyctalopia​

Answer 1

Answer:

Xerophthalmia :

It is a medical condition in which the eye fails to produce tears. It may be caused by vitamin A deficiency, which is sometimes used to describe that condition, although there may be other causes.

Nyctalopia:

Night Blindness is an inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder

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Answer 2

Explanation:

xerophthalmia is inability of eyes to produce tears due to deficiency of vit A

Nyctalopia is night blindness or inability to see in dim light due to deficiency of vitA