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
Which one of the following is NOT used in glaucoma 
Select and explain. 
A. Timolol, B. Physostigmine, C. Donepezil, D. Dipivefrine
C: Donepezil
Answer: C: Donepezil 
Explanation: 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.