Free COA Ophthalmic Knowledge and Diagnostic Questions and Answers

Question 1

Which of the following conditions is NOT hereditary?

Accepted Answer

Conjunctivitis

Answer

Explanation:
Conjunctivitis, also known as pink eye, is typically caused by infections (viral or bacterial) or allergies and is not inherited. The other conditions listed (migraines, diabetes, and nystagmus) have hereditary components.

Question 2

Corneal curvature measurement is vital to ensure that contact lens _______.

Accepted Answer

rests on the cornea

Answer

Explanation:
Corneal curvature measurement is vital to ensure that contact lenses fit properly and comfortably. Contact lenses should rest on the cornea, the clear front surface of the eye, for optimal vision correction and comfort. Resting on the cornea ensures proper alignment and avoids discomfort or complications.

Question 3

Which cannot be used for color vision testing?

Accepted Answer

Fly test

Answer

Explanation:
The fly test is not typically used for color vision testing. Options A, B, and C are commonly used methods for assessing color vision. Pseudoisochromatic plates, such as the Ishihara plates, are used for screening color vision deficiencies. Hardy-Rand-Ritter plates are used for testing acquired color vision defects. The Nagel anomaloscope is used for diagnosing and quantifying congenital color vision deficiencies.

Question 4

Which statement is TRUE pertaining to the use of plain gut sutures?

Accepted Answer

The sutures are absorbable

Answer

Explanation:
Plain gut sutures are absorbable, meaning they are gradually broken down and digested by the body's enzymes over time. This characteristic makes them suitable for use in tissues where permanent support is not required.

Question 5

The amoric environment in the operating room is created by all steps below with the exception of the:

Accepted Answer

use of powdered gloves

Answer

Explanation:
The use of powdered gloves is not conducive to creating an aseptic (or amoric) environment in the operating room because the powder can introduce particulate matter, potentially contaminating the surgical field. The other options—use of lint-free drapes, rinsing instruments with saline, and use of millipore filters—contribute to maintaining a sterile environment.

COA - Certified Ophthalmic Assistant Practice Test

COA - Certified Ophthalmic Assistant Practice Test

Free COA Ophthalmic Knowledge and Diagnostic Questions and Answers