This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjunctiva, Subject name: Ophthalmology
Blindness in child is most commonly due to 
Select and explain. 
A. Keratomalacia, B. Congenital cataract, C. Glaucoma, D. Injuries
A: Keratomalacia
Answer: A: Keratomalacia 
Explanation: Most common cause of childhood blindness is vitamin A deficiency Refer: Khurana 6th edition page number 382