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': 'All of the following conditions are immediate priorities in the WHO\'s "Vision -2020: The Right to sight" except: \nSelect and explain. \nA. Trachoma, B. Epidemic conjunctivitis, C. Cataract, D. Onchocerciasis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Epidemic conjunctivitis', 'role': 'assistant'}]