CPOA Ocular Diseases & Conditions 3

Question 1

A chalazion differs from a hordeolum (stye) primarily in that a chalazion is:

Accepted Answer

A chronic, sterile, lipogranulomatous inflammation of a meibomian gland

Answer

A chalazion is a chronic, non-infectious granulomatous inflammation caused by retained meibomian gland secretions, whereas a hordeolum is an acute bacterial infection of the eyelid glands.

Question 2

Episcleritis is characterized by:

Accepted Answer

Sectoral or diffuse redness of the episclera that is typically self-limiting and mild

Answer

Episcleritis is a benign, often self-limiting inflammation of the episclera presenting with sectoral or diffuse redness, mild discomfort, and no significant effect on vision or intraocular pressure.

Question 3

A patient reports a sudden bright flash of light followed by a shower of new floaters. With no other symptoms, this most likely represents:

Accepted Answer

Posterior vitreous detachment (PVD)

Answer

A sudden onset of photopsia and floaters, especially in patients over 50, most commonly represents a posterior vitreous detachment, a common and usually benign event, though the patient should be examined to rule out retinal tears.

Question 4

Optic neuritis is most commonly associated with which systemic condition?

Accepted Answer

Multiple sclerosis

Answer

Optic neuritis, which presents as painful, unilateral vision loss with a relative afferent pupillary defect, is strongly associated with multiple sclerosis and may be the initial presenting manifestation.

Question 5

Herpes zoster ophthalmicus (HZO) results from reactivation of which virus?

Accepted Answer

Varicella-zoster virus (VZV)

Answer

Herpes zoster ophthalmicus occurs when the varicella-zoster virus, which remains dormant in the trigeminal ganglion after chickenpox, reactivates and affects the ophthalmic branch of the trigeminal nerve.

(CPOA) Certified Paraoptometric Assistant Practice Test

(CPOA) Certified Paraoptometric Assistant Practice Test

CPOA Ocular Diseases & Conditions 3