CPOA Visual Acuity Testing 5

Question 1

If a patient can only detect hand motion (HM) but not count fingers, how should VA be recorded?

Accepted Answer

HM

Answer

Hand motion (HM) is recorded when the patient can detect a hand waving but cannot count individual fingers, indicating severely reduced vision.

Question 2

For a patient with nystagmus, the paraoptometric should:

Accepted Answer

Allow the patient to adopt their preferred head position (null point)

Answer

Patients with nystagmus often have a null point (preferred head position) where nystagmus is minimized and VA is best; testing should allow this position.

Question 3

What does the term 'optotype' refer to in visual acuity testing?

Accepted Answer

The standardized symbols or letters used on acuity charts

Answer

Optotypes are the standardized test symbols (letters, numbers, or shapes) on VA charts, designed to subtend a specific visual angle at a given distance.

Question 4

When a patient can count fingers at only 2 feet, the approximate Snellen equivalent is:

Accepted Answer

20/2000

Answer

Counting fingers at 2 feet is approximately equivalent to 20/2000 Snellen acuity, reflecting severely reduced vision.

Question 5

Which factor can artificially REDUCE measured visual acuity during testing?

Accepted Answer

Patient squinting or having uncorrected refractive error

Answer

Uncorrected refractive error or patient squinting (which acts as a partial pinhole) can cause artificially reduced or variable VA measurements.

(CPOA) Certified Paraoptometric Assistant Practice Test

(CPOA) Certified Paraoptometric Assistant Practice Test

CPOA Visual Acuity Testing 5