This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular Trauma, Subject name: Ophthalmology
[{'content': 'Betts classification is used for \nSelect and explain. \nA. Ocular Trauma, B. Retinopathy, C. Corneal Ulcers, D. Uveitis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) Ocular TraumaRef: International society of Ocular Trauma Official Website'Betts' in the betts classification refers to 'Birmingham Eye Trauma Terminology System'", 'role': 'assistant'}]