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': 'All are presentation of retinoblastoma except: \nSelect and explain. \nA. Leucocoria, B. Squint, C. Cataract, D. Glaucoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Cataract', 'role': 'assistant'}]