Xerophthalmia in children and nyctalopia (nig | vedclass

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(A) Vitamin $A$ (retinol) is essential for the formation of rhodopsin,a pigment in the rod cells of the retina that is responsible for vision in low l

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$A$

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(A) Vitamin $A$ (retinol) is essential for the formation of rhodopsin,a pigment in the rod cells of the retina that is responsible for vision in low light.Deficiency of vitamin $A$ leads to nyctalopia (night blindness),which is the inability to see clearly in dim light.Severe or prolonged deficiency leads to xerophthalmia,a condition characterized by dryness of the conjunctiva and cornea,which can eventually lead to blindness.

Xerophthalmia in children and nyctalopia (night blindness) in adults is caused by the deficiency of which vitamin?

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