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': 'Rosette shaped cataract in \nSelect and explain. \nA. Senile cataract, B. Diabetic cataract, C. Traumatic cataract, D. After cataract', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Traumatic cataract Rosette Cataract: This opacity may occur as a result of concussion injury, under the anterior or posterior coex or both and may be complete or sectored with a flower peddle or feather shape. A very close estimation as to when the injury occurred by viewing the lens with an optic section and determining at which nucleus it appears.', 'role': 'assistant'}]