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': 'Circumcorneal congestion is not seen in? \nSelect and explain. \nA. Acute bacterial conjunctivitis, B. Acute iritis, C. Acute glaucoma, D. Scleritis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Scleritis REF: khurana 4th ed p. 147 "Scleritis usually presents as diffuse erythema of the conjunctiva and sclera rather than circumcorneal congestion"', 'role': 'assistant'}]