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': 'Posterior polymorphous dystrophy \nSelect and explain. \nA. Causes corectopia, B. Is inherited in an autosomal recessive fashion, C. Causes blindness in over 90% of sufferers, D. Can be treated with lamellar corneal grafts', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Causes corectopia', 'role': 'assistant'}]