**Core Concept**
Acute angle closure glaucoma is a medical emergency characterized by a sudden increase in intraocular pressure (IOP) due to obstruction of the trabecular meshwork. This can be caused by various factors, including ciliary choroidal effusion, which increases the volume of the eye and pushes the iris forward, blocking the trabecular meshwork.
**Why the Correct Answer is Right**
The correct answer is a drug that can cause ciliary choroidal effusion, leading to acute angle closure glaucoma. This is typically seen with corticosteroids, particularly topical and systemic steroids. Corticosteroids can cause ciliary choroidal effusion by inducing inflammation and increasing the permeability of the blood-aqueous barrier, leading to fluid accumulation in the ciliary body and choroid.
**Why Each Wrong Option is Incorrect**
* **Option A:** This is incorrect because while certain medications can cause glaucoma, they typically do so by increasing the production of aqueous humor or decreasing its outflow, rather than causing ciliary choroidal effusion.
* **Option B:** This is incorrect because this medication is not commonly associated with ciliary choroidal effusion or acute angle closure glaucoma.
* **Option C:** This is incorrect because while it may have some effects on intraocular pressure, it is not typically associated with ciliary choroidal effusion.
**Clinical Pearl / High-Yield Fact**
Corticosteroids can cause a range of ocular side effects, including ciliary choroidal effusion, posterior subcapsular cataracts, and central serous chorioretinopathy. It is essential to monitor patients on corticosteroids for these potential complications.
**Correct Answer:** C.
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