Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Nyctalopia also called 'Night Blindness' is a condition making it difficult or impossible to see in relative low light. It is a symptom of several eye diseases. It may exist from birth, or be caused by injury or malnutrition. It is caused in human due to deficiency of vitamin - Sarthaks eConnect

Nyctalopia also called 'Night Blindness' is a condition making it difficult or impossible to see in relative low light. It is a symptom of several eye diseases. It may exist from birth, or be caused by injury or malnutrition. It is caused in human due to deficiency of vitamin

Nyctalopia also called 'Night Blindness' is a condition making it difficult or impossible to see in relative low light. It is a symptom of several eye diseases. It may exist from birth, or be caused by injury or malnutrition. It is caused in human due to deficiency of vitamin

A.

A

B.

B

C.

C

D.

D

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Vitamin A is a group of unsaturated nutrional organic compounds, that includes retinol, retinal, retionic acid and several provitamin A carotenoids, among which beta caroteen is the most important. Vitamine A is teh vitamin whose deficiency may cause night blindness.