CPOA Diagnostic Testing 4

Question 1

When performing non-contact tonometry (air-puff), the puff of air:

Accepted Answer

Briefly flattens the cornea and the instrument measures the time or force required

Answer

Non-contact tonometry directs a puff of air at the cornea, and the instrument measures the corneal applanation time or the reflected light to calculate IOP.

Question 2

A pupil that is larger than normal and does not constrict to light but constricts to accommodation is characteristic of:

Accepted Answer

Adie's tonic pupil

Answer

Adie's tonic pupil (Holmes-Adie syndrome) is a benign condition with a dilated, light-near dissociated pupil that constricts slowly and tonically to near targets.

Question 3

In OCT imaging of the macula, drusen appear as:

Accepted Answer

Deposits causing focal elevation of the retinal pigment epithelium

Answer

Drusen appear on OCT as focal elevations or bumps of the retinal pigment epithelium (RPE), representing lipid and protein deposits associated with AMD.

Question 4

A technician is preparing a patient for fluorescein angiography. The most important question to ask before injecting fluorescein is:

Accepted Answer

Does the patient have any allergies, especially to fluorescein or iodine?

Answer

Allergic reactions — including anaphylaxis — can occur with intravenous fluorescein, so allergy history must be confirmed before injection.

Question 5

The retinal nerve fiber layer (RNFL) is best evaluated using which imaging modality?

Accepted Answer

Optical coherence tomography (OCT)

Answer

OCT provides high-resolution cross-sectional imaging of the RNFL thickness, making it the standard tool for detecting glaucomatous damage to the nerve fiber layer.

(CPOA) Certified Paraoptometric Assistant Practice Test

(CPOA) Certified Paraoptometric Assistant Practice Test

CPOA Diagnostic Testing 4