###Rationale: Ans. is 'a' i.e., Pilocarpine Angle closure glaucomao Treatment of choice for acute congestive glaucoma - Laser iridotomy (1st choice), Peripheral iridectency (2nd choice)o Drug of choice for acute congestive glaucoma - Pilocarpineo Initially IOP is controlled (first drug used) - Systemic mannitol or acetazolamideOpen angle glaucomao Treatment of choiceo Drug of choiceo Surgery of choiceTopical antiglaucoma drugsb - blocker (Timolol, betaxolol, levobunalol)Argon or diode laser trabeculoplasty

###Answer: OPTION A IS CORRECT.
###Question: Which muscarinic agonist is used in the treatment of angle closure glaucoma?
###Options:
A. Pilocarpine
B. Neostigmine
C. Brimonidine
D. Dipiveffine
