CPOA Visual Acuity Testing 4

Question 1

What is 'amblyopia' as it relates to visual acuity testing?

Accepted Answer

Reduced VA in one eye not correctable with lenses due to abnormal visual development

Answer

Amblyopia ('lazy eye') is reduced best-corrected VA in one eye caused by abnormal visual development in childhood, not explainable by organic disease alone.

Question 2

When using a mirror system to simulate 20 feet in a small room, the actual room distance is typically:

Accepted Answer

10 feet

Answer

A plane mirror placed 10 feet from the patient doubles the apparent distance to 20 feet, allowing standard VA testing in smaller rooms.

Question 3

When asking a patient to read the Snellen chart, the paraoptometric should instruct the patient to:

Accepted Answer

Read the smallest line they can see clearly

Answer

Patients should be directed to read the smallest line they can see clearly, as this identifies their actual acuity threshold.

Question 4

Which abbreviation correctly documents visual acuity tested without glasses?

Accepted Answer

sc

Answer

The abbreviation 'sc' (sine correctione) means without correction and is used to document uncorrected visual acuity.

Question 5

A Snellen fraction of 20/15 indicates the patient:

Accepted Answer

Sees better than average at distance

Answer

20/15 means the patient sees at 20 feet what a normal person must be at 15 feet to see, indicating above-average distance visual acuity.

(CPOA) Certified Paraoptometric Assistant Practice Test

(CPOA) Certified Paraoptometric Assistant Practice Test

CPOA Visual Acuity Testing 4