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': 'Primary aim of retinal detachment surgery \nSelect and explain. \nA. Removal of vitreous, B. Drainage of subretinal fluid, C. Vitrectomy, D. Encirclage', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Encirclage The main objective of the treatment of retinal detachment is to seal and suppo the retinal breakQ.', 'role': 'assistant'}]