**Core Concept**
The question is testing the student's knowledge of the mechanism of action of anti-glaucoma medications, specifically those that increase uveoscleral outflow. Uveoscleral outflow refers to the drainage of aqueous humor through the uveoscleral pathway, which is an alternative to the trabecular meshwork in the conventional outflow pathway.
**Why the Correct Answer is Right**
Prostaglandin analogs, such as latanoprost, increase uveoscleral outflow by promoting the opening of the uveoscleral pathway, thereby increasing the outflow of aqueous humor. This is achieved through the activation of the prostaglandin F2α receptor, which leads to the relaxation of the ciliary muscle and the contraction of the ciliary epithelium, ultimately increasing the uveoscleral outflow.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because, although beta-blockers are used in glaucoma treatment, they primarily decrease aqueous humor production and have a minimal effect on uveoscleral outflow.
**Option B:** This option is incorrect because carbonic anhydrase inhibitors are primarily used to decrease aqueous humor production and have a minimal effect on uveoscleral outflow.
**Option C:** This option is incorrect because alpha-agonists, such as brimonidine, primarily decrease aqueous humor production and have a minimal effect on uveoscleral outflow.
**Clinical Pearl / High-Yield Fact**
Prostaglandin analogs, such as latanoprost, are often used as first-line treatment for glaucoma due to their effectiveness in increasing uveoscleral outflow and decreasing intraocular pressure.
**Correct Answer: C. Latanoprost**
Free Medical MCQs · NEET PG · USMLE · AIIMS
Access thousands of free MCQs, ebooks and daily exams.
By signing in you agree to our Privacy Policy.