This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: A.N.S., Subject name: Pharmacology
[{'content': 'Which of the following anti-glaucoma drugs can cause heterochromia iridis? \nSelect and explain. \nA. Timolol, B. Latanoprost, C. Apraclonidine, D. Acetazolamide', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (B) Latanoprost(Ref: Katzung 12th/e p328; KDT 8th/e p169)PGF2a agonists like Latanoprost can cause iris pigmentation (heterochromia iridis) and growth of eyelashes (liypertrichosis) as adverse effects.', 'role': 'assistant'}]