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
Iris cyst are induced by 
Select and explain. 
A. Atropine, B. Pilocarpine, C. Phenylephrine, D. Ecothiopate
D: Ecothiopate
Answer: D: Ecothiopate 
Explanation: D i.e. Ecothiopate