CPOA Ocular Pharmacology 2

Question 1

Which class of medication is commonly used as a cycloplegic agent to paralyze the ciliary muscle during refraction?

Accepted Answer

Anticholinergics

Answer

Anticholinergic agents such as cyclopentolate and atropine block muscarinic receptors, paralyzing the ciliary muscle to prevent accommodation.

Question 2

Timolol maleate is classified as which type of glaucoma medication?

Accepted Answer

Non-selective beta-blocker

Answer

Timolol is a non-selective beta-adrenergic blocker that reduces aqueous humor production by the ciliary body.

Question 3

A patient is prescribed latanoprost eye drops. Which side effect should you warn them about?

Accepted Answer

Iris color change

Answer

Prostaglandin analogs like latanoprost can cause increased iris pigmentation (heterochromia) with long-term use.

Question 4

What is the mechanism by which pilocarpine lowers intraocular pressure?

Accepted Answer

Opens trabecular meshwork by contracting ciliary muscle

Answer

Pilocarpine is a cholinergic agent that contracts the ciliary muscle, pulling the scleral spur and widening the trabecular meshwork to increase aqueous outflow.

Question 5

Which topical anesthetic has the FASTEST onset of action?

Accepted Answer

Proparacaine

Answer

Proparacaine (proxymetacaine) has the fastest onset of action at approximately 20 seconds and is less irritating than tetracaine.

(CPOA) Certified Paraoptometric Assistant Practice Test

(CPOA) Certified Paraoptometric Assistant Practice Test

CPOA Ocular Pharmacology 2