1|Page
CERTIFIED OPHTHALMIC ASSISTANT COA
Study Guide 2025/2026; Actual Exam
Questions With Correct Verified Answers
How are systemic medications administered? - Correct-answer-Orally, injection
(subcutaneously or intramuscularly) or intravenously
How should drops be properly instilled into a patient's eye? - Correct-answer-Into
the lower cul de sac (lower fornix)
What does the term idiosyncrasy refer to with ophthalmic drugs? - Correct-
answer-A bizarre, peculiar reaction to a drug that is not commonly seen, such as
tremors, excitability or even collapse
What is the name of the instrument used to neutralize lenses? - Correct-answer-
Lensometer (Lensmeter)
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When recording a prism in a spectacle prescription, what does the abbreviation
BO stand for? - Correct-answer-Base out
What is determined by focusing the thin lines in a manual lensometer? - Correct-
answer-The sphere of the spectacle prescription
What is the first step in performing lensometry? - Correct-answer-Focus the
eyepiece
When PRK is being performed, time remaining in the procedure should be
announced in increments of ______ - Correct-answer-10 seconds
Name the organism that is most destructive to the eye. - Correct-answer-
Pseudomonas Aeruginosa
What procedure using an Argon Laser is thought to destroy areas of ischemic
retina? - Correct-answer-Panretinal photocoagulation or panretinal laser
,3|Page
What type of intraocular injection is made at the Pars plana site with a needle and
syringe of medication? - Correct-answer-Intravitreal injection
What are the parallel movements of the eyes from one gaze position to another -
Correct-answer-Versions
What is the movement of one eye called - Correct-answer-Duction
Versions and ductions are tested by using ________ to test the six pairs of
_______ muscles. - Correct-answer-Six Cardinal positions, yoke
The movement of the eye outward toward the temple is called _____ - Correct-
answer-Abduction
What is the technique used to measure the radius of curvature of the anterior
corneal surface? - Correct-answer-A-Scan Keratometry Length Measurements
, 4|Page
Keratometry is performed with a device called a ______ - Correct-answer-
Keratometer or ophthalmometer
Give three examples in which a Keratometry measurement would be useful. -
Correct-answer-Contact lens fitting, refractive surgery, intraocular lens
calculations, keratoconus
Keratometry is measured in _____ - Correct-answer-Diopters
Measuring intraocular pressure is also called _____ - Correct-answer-Tonometry
The higher the intraocular pressure of an eye, the ____ the eye - Correct-answer-
Harder
Applanation tonometry displaces less than ____ of aqueous. - Correct-answer-0.5
microliters
CERTIFIED OPHTHALMIC ASSISTANT COA
Study Guide 2025/2026; Actual Exam
Questions With Correct Verified Answers
How are systemic medications administered? - Correct-answer-Orally, injection
(subcutaneously or intramuscularly) or intravenously
How should drops be properly instilled into a patient's eye? - Correct-answer-Into
the lower cul de sac (lower fornix)
What does the term idiosyncrasy refer to with ophthalmic drugs? - Correct-
answer-A bizarre, peculiar reaction to a drug that is not commonly seen, such as
tremors, excitability or even collapse
What is the name of the instrument used to neutralize lenses? - Correct-answer-
Lensometer (Lensmeter)
,2|Page
When recording a prism in a spectacle prescription, what does the abbreviation
BO stand for? - Correct-answer-Base out
What is determined by focusing the thin lines in a manual lensometer? - Correct-
answer-The sphere of the spectacle prescription
What is the first step in performing lensometry? - Correct-answer-Focus the
eyepiece
When PRK is being performed, time remaining in the procedure should be
announced in increments of ______ - Correct-answer-10 seconds
Name the organism that is most destructive to the eye. - Correct-answer-
Pseudomonas Aeruginosa
What procedure using an Argon Laser is thought to destroy areas of ischemic
retina? - Correct-answer-Panretinal photocoagulation or panretinal laser
,3|Page
What type of intraocular injection is made at the Pars plana site with a needle and
syringe of medication? - Correct-answer-Intravitreal injection
What are the parallel movements of the eyes from one gaze position to another -
Correct-answer-Versions
What is the movement of one eye called - Correct-answer-Duction
Versions and ductions are tested by using ________ to test the six pairs of
_______ muscles. - Correct-answer-Six Cardinal positions, yoke
The movement of the eye outward toward the temple is called _____ - Correct-
answer-Abduction
What is the technique used to measure the radius of curvature of the anterior
corneal surface? - Correct-answer-A-Scan Keratometry Length Measurements
, 4|Page
Keratometry is performed with a device called a ______ - Correct-answer-
Keratometer or ophthalmometer
Give three examples in which a Keratometry measurement would be useful. -
Correct-answer-Contact lens fitting, refractive surgery, intraocular lens
calculations, keratoconus
Keratometry is measured in _____ - Correct-answer-Diopters
Measuring intraocular pressure is also called _____ - Correct-answer-Tonometry
The higher the intraocular pressure of an eye, the ____ the eye - Correct-answer-
Harder
Applanation tonometry displaces less than ____ of aqueous. - Correct-answer-0.5
microliters
