This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Uveal tract, Subject name: Ophthalmology
Pathognomic sign of Acute Iriodocyclitis is - 
Select and explain. 
A. Aquous flare, B. Keratic precipitates, C. Small pupil, D. All of the above
B: Keratic precipitates
Answer: B: Keratic precipitates 
Explanation: Keratic precipitates (KPs) on posterior surface of cornea are pathognomonic of the involvement of ciliary body in the inflammation. * Earliest sign of anterior uveitis- aqueous flare. * Pathognomonic sign -Keratic precipitate. Ref: Clinical ophthalmology 1st/e p.568.