This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea and sclera, Subject name: Ophthalmology
Keratomalacia is associated with 
Select and explain. 
A. Measles, B. Mumps, C. Chicken pox, D. Rubella
A: Measles
Answer: A: Measles 
Explanation: Vitamin A deficiency and Keratomalacia The condition is usually bilateral. The cornea becomes dull and insensitive, hazy, and yellow infiltrates form until finally the whole tissue undergoes necrosis and seems to melt away (Keratomalacia) with in few hrs. A characterstic feature is the absence of inflammatory reaction. It is often precipitated by an acute systemic illness such as measles, pneumoniae and severe diarrhoea. Treatment: Ref:- Parsons diseases of eye; pg num:-218