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': 'Which of the following is not an ophthalmic emergency: \nSelect and explain. \nA. Macular hole, B. Retinal Detachment, C. CRAO, D. Acute primary angle closure glaucoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Macular hole', 'role': 'assistant'}]