Question

what is night blindness what causes night blindness

Answer 1

night blindness is vision impairment. The person suffering from this cannot see at night without.
It is caused deficiency of vitamin A

Answer 2

night blindness is a deficiency and non communicable disease , which makes one , blind at night or the person can see partly on night or can see only some colours
it is due to the deficiency of vitamin A or because of long term nearsightedness, cataracts
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