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': 'Which one of the following is NOT used in glaucoma \nSelect and explain. \nA. Timolol, B. Physostigmine, C. Donepezil, D. Dipivefrine', 'role': 'user'}, {'content': "Answer: C \nExplanation: C i.e. Donepezil Mydriatic drugs such as atropineQ, cyclopentolate, phenylephrine and tropicamide precipitate angle closure glaucoma; and so are not used in treatment of glaucoma. Donepezil is a centrally acting anticholinesterase (cholinergic) drug used in Alzheitner's dementia.", 'role': 'assistant'}]