ABO Pharmacology & Ocular Therapeutics 2

Question 1

Fluorescein sodium dye is used in optometry primarily to:

Accepted Answer

Evaluate corneal integrity and assess contact lens fitting

Answer

Fluorescein stains damaged corneal epithelium and fluoresces under cobalt blue light, and is also used to evaluate rigid contact lens fluorescein patterns.

Question 2

Rose bengal stain is particularly useful for detecting:

Accepted Answer

Devitalized conjunctival and corneal epithelial cells

Answer

Rose bengal selectively stains devitalized and dead epithelial cells, making it valuable for diagnosing dry eye syndrome and other ocular surface diseases.

Question 3

Combination antihistamine/mast cell stabilizer drops such as olopatadine (Pataday) are indicated for:

Accepted Answer

Allergic conjunctivitis

Answer

Olopatadine provides dual-action relief for allergic conjunctivitis by blocking histamine receptors and preventing mast cell degranulation.

Question 4

Topical carbonic anhydrase inhibitors (e.g., dorzolamide) lower IOP by:

Accepted Answer

Reducing aqueous humor production

Answer

CAIs inhibit carbonic anhydrase in the ciliary body epithelium, reducing aqueous humor secretion and lowering IOP.

Question 5

Which drug can be used to pharmacologically reverse iatrogenic pupil dilation?

Accepted Answer

Pilocarpine

Answer

Pilocarpine, a cholinergic miotic, stimulates the iris sphincter muscle to constrict the pupil and reverse mydriasis.

ABO - American Board of Optometry Practice Test

ABO - American Board of Optometry Practice Test

ABO Pharmacology & Ocular Therapeutics 2