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': 'Two weeks after an injury to his right eye, a boy presents with bilateral pain and redness, most probable diagnosis is - \nSelect and explain. \nA. Sympathetic ophthalmitis, B. Endophthalmitis, C. Optic neuritis, D. Glaucoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Sympathetic ophthalmitis is the only condition in which injury occurs to one eye (exciting eye), but symptoms develop in other eye (sympathizing eye) too.\nThis boy developed pain and redness in both eye after injury to right eye. This can occur only in sympathetic ophthalmitis.', 'role': 'assistant'}]