This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of Cornea, Subject name: Ophthalmology
[{'content': 'Keratomalacia is associated with which of the following infections? \nSelect and explain. \nA. Herpes simplex, B. Varicella zoster, C. Measles, D. Diphtheria', 'role': 'user'}, {'content': 'Answer: C \nExplanation: - Keratomalacia is often precipitated by an acute systemic illness such as measles, pneumonia, or severe diarrhea.- Keratomalacia is common in developing countries and affects poorly nourished children who are deficient in Vitamin A, often early in the first year of life.- The cornea becomes dull and insensitive, finally the whole tissue undergoes necrosis and seems to melt away (keratomalacia)', 'role': 'assistant'}]