This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Elementary Optics, Subject name: Ophthalmology
[{'content': "Scarpa's Staphyloma is seen in \nSelect and explain. \nA. Retinal Detachment, B. Myopia, C. Glaucoma, D. Iridocyclitis", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. (b) MyopiaRef: Clinical ophthalmology By Sandeep Saxena 2/e, p. 445'The presence of posterior staphyloma (Scarpa's Staphyloma) is pathognomonic of pathologic myopia'", 'role': 'assistant'}]