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
Circumcorneal congestion is not seen in? 
Select and explain. 
A. Acute bacterial conjunctivitis, B. Acute iritis, C. Acute glaucoma, D. Scleritis
D: Scleritis
Answer: D: Scleritis 
Explanation: Scleritis REF: khurana 4th ed p. 147 "Scleritis usually presents as diffuse erythema of the conjunctiva and sclera rather than circumcorneal congestion"