This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': 'Cornea melts without inflammation in which condition - \nSelect and explain. \nA. Gout, B. Sarcoidosis, C. Keratomalacia, D. Rheumatoid arthritis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Keratomalacia\n\nIt is a common condition in developing countries and is due to deficiency of vitamin A. \xa0\nThe condition is usually bilateral.\nIn keratomalacia, the cornea becomes dull and insensitive, hazy and yellow infiltrates form until finally the whole tissue undergoes necrosis and seems to melt away within a few hours.\nA characteristic feature is the absence of inflammatory reaction.\nKeratomalacia is often precipitated by an acute systemic illness such as measles, pneumonia or severe diarrhoea.', 'role': 'assistant'}]