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 seen in blunt injury of the eye except: \nSelect and explain. \nA. Hyphema, B. Iridocyclitis, C. Double perforation, D. Retinal detachment', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Double perforation', 'role': 'assistant'}]