CPOA Clinical Procedures 5

Question 1

When performing applanation tonometry, the fluorescein mires should be adjusted until the inner edges of the two semicircles are:

Accepted Answer

Just touching (inner margins meeting)

Answer

The correct endpoint for Goldmann tonometry is when the inner edges of the two fluorescein semicircles just touch each other.

Question 2

A patient is unable to read the 20/400 letter at three meters. The next step for recording acuity is to test:

Accepted Answer

Counting fingers (CF)

Answer

When a patient cannot resolve any chart letter, acuity is recorded as counting fingers (CF) at the distance the patient correctly identifies finger count.

Question 3

During automated perimetry, a reliability index called 'false positive rate' measures how often the patient responds when:

Accepted Answer

No stimulus is actually presented

Answer

False positives occur when patients click the button during 'catch trials' where no stimulus is shown, indicating trigger-happy or unreliable responses.

Question 4

Which instrument measures the back vertex distance (BVD) between the cornea and the spectacle lens?

Accepted Answer

Distometer

Answer

A distometer (vertex distance gauge) measures the distance from the back surface of the spectacle lens to the anterior cornea, important for high prescriptions.

Question 5

When recording blood pressure in a pre-exam health screening, the cuff should be placed:

Accepted Answer

Directly on the skin of the upper arm

Answer

The cuff must be placed directly on the skin of the upper arm, 2–3 cm above the antecubital fossa, for an accurate measurement.

(CPOA) Certified Paraoptometric Assistant Practice Test

(CPOA) Certified Paraoptometric Assistant Practice Test

CPOA Clinical Procedures 5