The following condition is caused by the deficiency of?: (A) vitamin A, (B) vitamin B, (C) Vitamin C, (D) vitamin D
Answer is A. Bitot&;s spots are the buildup of keratin located superficially in the conjunctiva of human&;s eyes. They can be oval, triangular or irregular in shape. The spots are a sign of vitamin A deficiency and associated with drying of the cornea. ref : harrisons 20th ed