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: Pharmacology
Which of the following drug is not used in treatment of iridocyclitis: 
Select and explain. 
A. Atropine eye ointment, B. Pilocarpine eye drops, C. Timolol eye drops, D. Steroid eye drops
C: Timolol eye drops
Answer: C: Timolol eye drops 
Explanation: None