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: Unknown
[{'content': 'Triple surgery in glaucoma includes all of the following except: \nSelect and explain. \nA. Trabeculectomy, B. PCIOL implantation, C. Insertion of drainage device, D. Extra capsular cataract extraction', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 253)\nTriple Procedure for Glaucoma:\n\nTRABECULECTOMY\nECCE\nPCIOL INSERTION', 'role': 'assistant'}]