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
[{'content': 'Latanoprost used topically in glaucoma primarily acts by? \nSelect and explain. \nA. Decreasing aqueous humor formation, B. Increasing uveoscleral outflow, C. Releasing pupillary block, D. Increasing trabecular outflow', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Increasing uveoscleral outflow", 'role': 'assistant'}]