This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitreous and retina, Subject name: Ophthalmology
[{'content': 'Scleral buckling is used for treatment of- \nSelect and explain. \nA. Cataract, B. Scleritis, C. Retinal detachment, D. Vitreous hemorrhage', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In retinal detachment to maintain chorioretinal apposition, scleral buckling is done. Inward indentation of sclera to provide external tamponade (scleral buckling). Scleral buckling is achieved by inseing an explant (silicone sponge or solid silicone band) with the help of mattress type sutures applied in the sclera. Ref: khurana 5 th edition , page no.297', 'role': 'assistant'}]