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': "Which prominent ocular manifestation is associated with Marfan's syndrome : \nSelect and explain. \nA. Microcornea, B. Microspherophakia, C. Megalocornea, D. Ectopia lentis", 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Ectopia lentis', 'role': 'assistant'}]