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': 'The lens can be dislocated in all except - \nSelect and explain. \nA. Homocystinuria, B. Marfan’s syndrome, C. Trauma, D. Wilson’sdisease', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ectopia lentis \n\nEctopia lentis is defined as displacement or malposition of the crystalline lens of the eye.\nThe lens is considered dislocated (luxated) when it lies completely outside the lens patellar fossa.\nThe lens is described as subluxated when it is partially displaced but contained within the lens space. Causes are', 'role': 'assistant'}]