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': 'Treatment of primary angle closure glaucoma is \nSelect and explain. \nA. Trabeculectomy, B. Pilocarpine, C. Timolol, D. Iridectomy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Iridectomy', 'role': 'assistant'}]