This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glaucoma, Subject name: Ophthalmology
[{'content': 'Best treatment for buphthalmos is \nSelect and explain. \nA. Trabeculectomy, B. Goniotomy, C. Cryotherapy, D. Conservative', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b (Goniotomy). (Ref. Parson, Diseases of Eye, 18th/pg.214)BUPHTHALMOSNormal IOT in Schiotz tonometer is 14-20 mmHg.Glaucoma Index =Initial IOP-----------Facility of outflow(Normal < 100)Treatment of choice for buphthalmos is goniotomy.Eventual success rate with goniotomy is 85%.However in resistant cases trabeculectomy and trabeculotomy are helpful.Trabeculotomy is useful when corneal clouding is present or when goniotomy fails.', 'role': 'assistant'}]