Tag: Iris sphincter muscle

An estimated 4.2 million Americans have glaucoma, a condition where the medication pilocarpine can be used to help manage eye pressure. Understanding **how does pilocarpine cause miosis**, or pupil constriction, is key to understanding its therapeutic effect.

Pilocarpine, a medication used for over a century, is a direct-acting cholinergic agonist that significantly impacts smooth muscle tissue throughout the body, particularly in the eyes. Its primary action explains exactly what muscle pilocarpine acts on to constrict the pupil and facilitate fluid drainage for therapeutic effects.