**Core Concept**
The management of glaucoma often involves reducing intraocular pressure (IOP) through the use of various medications, including miotic agents. Miotic agents, also known as cholinergics, work by stimulating the muscarinic receptors in the eye, leading to contraction of the ciliary muscle and increased outflow of aqueous humor.

**Why the Correct Answer is Right**
Pilocarpine is a direct-acting muscarinic agonist that stimulates the muscarinic receptors in the eye, leading to contraction of the ciliary muscle and increased outflow of aqueous humor. This results in decreased IOP, making it an effective treatment for glaucoma. Pilocarpine works by binding to the M3 muscarinic receptors in the eye, which triggers the contraction of the ciliary muscle and the opening of the trabecular meshwork, leading to increased aqueous outflow.

**Why Each Wrong Option is Incorrect**
**Option A:** Acetazolamide is a carbonic anhydrase inhibitor, which works by reducing the production of aqueous humor in the ciliary body, but it is not a miotic agent.
**Option B:** Timolol is a beta-blocker, which works by reducing the production of aqueous humor in the ciliary body, but it is not a miotic agent.
**Option C:** Latanoprost is a prostaglandin analog, which works by increasing the outflow of aqueous humor through the uveoscleral pathway, but it is not a miotic agent.

**Clinical Pearl / High-Yield Fact**
Miotic agents like pilocarpine can cause pupil constriction, which can be a useful side effect in patients with angle-closure glaucoma, but it can also cause accommodative spasm and blurred vision in some patients.

**Correct Answer: D. Pilocarpine. Pilocarpine.**