This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Ophthalmology
[{'content': 'First sign of sympathetic Ophthalmitis is: \nSelect and explain. \nA. Circumcorneal congestion, B. Hypopyon, C. Retrolental flare, D. Iris nodule', 'role': 'user'}, {'content': "Answer: C \nExplanation: First sign in sympathetic ophthalmitis : retrolental flare Sympathetic ophthalmitis ( Pan uveitis)* B/L granulomatous uveitis* Caused by trauma to 1 eye- Injured eye - Exciting eye- other eye - Sympathizing eye - Accommodation failure in good eye Earliest sign: Retrolental flare - Mutton fat KP's", 'role': 'assistant'}]