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Question 1
Fixed combinations without beta blockers result in a ________mmHg when added to PGAs.
Correct Answer:
5.6
Explanation:
Adding a fixed combination without a beta blocker to a prostaglandin analog typically yields a modest, additional drop in intraocular pressure. Studies and practice data show this incremental effect is around 5 to 6 mmHg, with 5.6 mmHg being a representative average. The reason is that the second agent works through a different mechanism and provides extra outflow or production suppression, but the total pressure reduction has a ceiling in chronic therapy, so the gain from each non–beta-blocker combination is usually in the single-digit range. That’s why 5.6 mmHg best fits the observed add-on effect. The other values are either smaller or larger than the typical incremental benefit observed when the added fixed combination does not include a beta blocker.
Question 2
In this context, Tmax refers to what?
Correct Answer:
The highest untreated IOP reading
Explanation:
Tmax is the highest untreated IOP reading. It represents the peak intraocular pressure that would be observed if no treatment were given, providing a reference point for how high the pressure could rise without therapy. This helps explain how much lowering treatment achieves—the goal is to bring the patient’s actual IOP down from that untreated peak to a safer range. It’s different from the average untreated IOP, the last treated reading, or the baseline after treatment, which reflect other aspects of measurement rather than the potential untreated maximum.
Question 3
What is the dosage of methazolamide (neptazane)?
Correct Answer:
25 mg, 50 mg
Explanation:
Methazolamide is a systemic carbonic anhydrase inhibitor used to lower intraocular pressure in POAG, and it is formulated as oral tablets in two common strengths. The standard tablet strengths are 25 mg and 50 mg, so the appropriate dosage options reflect these two strengths. In practice, the dose is given in divided amounts (often 25–50 mg per dose, with adjustments based on response and renal function), but for this question the key point is the available tablet strengths. The other numeric options don’t correspond to the standard Neptazane tablet strengths.
Question 4
What is the brand name version of brimonidine?
Correct Answer:
Alphagan P 0.1%, 0.15% (contains purite!)
Explanation:
Brimonidine’s marketed brand with the Purite preservative is Alphagan P, and the “P” stands for Purite. Alphagan P is offered in two strengths, 0.1% and 0.15%, with Purite as the preservative in the product. This combination—Alphagan P 0.1% or 0.15% containing Purite—is why that choice is the best answer. The other options either list a non-Purite version, a nonstandard strength, or a non-existent formulation, which aren’t the branded Purite-preserved brimonidine products.
Question 5
Why are beta-blockers not dosed at bedtime (QHS)?
Correct Answer:
doesn't work at night
Explanation:
Beta-blockers lower intraocular pressure mainly by reducing aqueous humor production. This production follows a circadian pattern and is naturally lower at night, so adding a beta-blocker at bedtime doesn’t yield much extra IOP reduction. Dosing in the morning takes advantage of higher daytime production and helps blunt the typical daytime IOP rise, making the medication more effective. While nocturnal systemic side effects can be a safety consideration with these drugs, that doesn’t explain the diminished night-time effect and isn’t the reason for not dosing at night.
Question 1
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About this Exam

Prepare with the Primary Open-Angle Glaucoma (POAG) Spectrum Practice Test practice quiz. This question bank includes 10 questions covering brand, name, fixed, beta, and blockers. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Primary Open-Angle Glaucoma (POAG) Spectrum Practice Test

This practice set contains 10 questions from the matching question bank and focuses on brand, name, fixed, beta, and blockers. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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