First clinical sign of vitamin A deficiency –
Correct Answer: Conjunctival xerosis
Description: Ans. is 'b' i.e., Conjuncival xerosis * The most characteristic and specific sign of vitamin-A deficiency are eye lesions. The term xerophthalmia (dry eye) comprises all ocular manifestations of vitamin-A deficiency.* It has following stages1) Night blindness (earliest symptom)2) Conjunctival xerosis (earliest sign)3) Bitot's spot4) Corneal xerosis5) Corneal ulcer & keratomalacia.
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