Final answer:
The pilocarpine ocular system is prescribed for the client with glaucoma to reduce intraocular pressure. It constricts the pupil and causes the ciliary muscle to contract, allowing for drainage of aqueous humor. The client should replace the pilocarpine ocular system as directed.
Step-by-step explanation:
The pilocarpine ocular system is prescribed for the client with glaucoma to reduce intraocular pressure. It constricts the pupil through the smooth muscle of the iris and causes the ciliary muscle to contract, allowing for the drainage of aqueous humor from the eye. The client should replace the pilocarpine ocular system as directed by their healthcare provider.