COA - Certified Ophthalmic Assistant Visual Assessment and Testing Questions and Answers

Question 1

A patient's best-corrected distance visual acuity is 20/40 in the right eye.
When you recheck the vision with a pinhole occluder, it improves to 20/25.
What is the most likely cause of the reduced vision?

Accepted Answer

Uncorrected refractive error

Answer

Cataract

Answer

Macular degeneration

Answer

Amblyopia

Question 2

When performing Amsler grid testing on a patient, which of the following instructions is most critical for an accurate result?

Accepted Answer

"Hold the grid at a comfortable reading distance, about 12-14 inches away."

Answer

"Test both eyes together first, then check each eye individually."

Answer

"Remove your reading glasses to avoid any distortion they might cause."

Answer

"Focus on the entire grid at once to see the overall pattern."

Question 3

A Certified Ophthalmic Assistant is performing confrontation visual field testing on a patient. The assistant and patient are seated facing each other. To properly test the patient's right eye, the assistant should instruct the patient to cover their left eye and the assistant should cover their:

Accepted Answer

Right eye, looking at the patient's right eye

Answer

Left eye, looking at the patient's nose

Answer

Left eye, looking at the patient's right eye

Answer

Right eye, looking at the patient's left eye

Question 4

Which of the following is the primary purpose of using Ishihara plates during a visual assessment?

Accepted Answer

To screen for red-green color vision deficiencies

Answer

To measure intraocular pressure

Answer

To assess stereopsis and depth perception

Answer

To detect central visual field defects

Question 5

A 5-year-old child is being tested for stereopsis. Which of the following tests would be most appropriate for this age group?

Accepted Answer

Titmus Fly Test

Answer

Amsler Grid

Answer

Confrontation Fields

Answer

Snellen Acuity Chart

Question 6

If a patient cannot see the largest letter on the Snellen chart (20/400), what is the next step in assessing their visual acuity?

Accepted Answer

Assess their ability to count fingers (CF) at a specified distance

Answer

Record the vision as NLP (No Light Perception)

Answer

Use the pinhole occluder

Answer

Move the patient closer to the chart until they can see the largest letter

A patient's best-corrected distance visual acuity is 20/40 in the right eye.When you recheck the vision with a pinhole occluder, it improves to 20/25.What is the most likely cause of the reduced vision?

A patient's best-corrected distance visual acuity is 20/40 in the right eye.
When you recheck the vision with a pinhole occluder, it improves to 20/25.
What is the most likely cause of the reduced vision?