## **Core Concept**
Angle closure glaucoma is a condition characterized by increased intraocular pressure (IOP) due to impaired outflow of aqueous humor. The management involves reducing IOP and avoiding medications that can worsen the condition. Certain classes of drugs can exacerbate angle closure glaucoma by causing mydriasis (pupil dilation), which can further block the drainage angle.

## **Why the Correct Answer is Right**
The correct answer, **Anticholinergics**, are known to cause mydriasis by blocking the action of acetylcholine at muscarinic receptors in the eye, leading to pupil dilation. This effect can worsen angle closure glaucoma by further obstructing the already narrowed drainage angle, thereby increasing intraocular pressure.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Not specified, but assuming it's a class of drugs not directly related to causing mydriasis or increasing IOP.
- **Option B:** Similarly, not specified, but if it's a class that does not cause significant mydriasis or increase IOP, it would be less likely to worsen angle closure glaucoma.
- **Option C:** Without specifics, if this option does not cause mydriasis or increase IOP, it's less likely to be harmful.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that in patients with angle closure glaucoma, medications that can cause pupillary dilation (mydriasis) should be avoided. This includes **anticholinergic** and **sympathomimetic** agents. Conversely, **miotics** (like pilocarpine) and **beta-blockers** can be beneficial or used cautiously.

## **Correct Answer:** . **Anticholinergics**