COA Newest Practice Test 3 with 400 Correctly
Answered Questions / Certified Ophthalmic
Assistant Exam 2026 Prep Test Bank (A review
of 400 Correctly Answered Practice Questions)
Another name for near-sightedness is - ANSWER-myopia.
The inability to focus due to loss of lens elasticity is called - ANSWER-
presbyopia.
A patient who has called into the clinic because of a chemical burn to the eye
should be told to do what before coming in? - ANSWER-Irrigate the affected eye,
continually, for at least 10 to 15 minutes
All of the following information should be collected from the patient while taking
the history of a present condition except
A. onset.
B. location.
C. duration.
D. desired medication. - ANSWER-desired medication.
What do you do if a patient prefers only to speak to the physician? - ANSWER-
Comply with their request and notify the physician
What types of medications or supplements increase a patient's propensity to bleed,
exacerbating certain eye diseases? - ANSWER-Blood thinners
1
,A patient suffering from distorted vision such as "fuzzy" or "minified" objects may
be suffering from - ANSWER-macular edema.
A patient who reports seeing an aura consisting of flashing lines in a zigzag pattern
may be suffering from - ANSWER-scintillating scotoma.
Which of the following is not part of history taking? - ANSWER-Contrast
sensitively
A patient suffering from conjunctivitis will typically present what symptom? -
ANSWER-Discharge from the eye Scratchy feeling in the eye. Hazy vision
Diplopia is another name for - ANSWER-double vision
If a patient is suffering from monocular diplopia - ANSWER-double vision will
persist when one eye is covered.
Asking whether or not a patient wears contact lenses or eyeglasses is part of the -
ANSWER-ocular history.
What is the radius of the corneal curvature useful for? - ANSWER-Fitting contact
lenses
If a patient's eyesight is very poor and they cannot focus on the target inside the
keratometer, what should be done to assist them? - ANSWER-Shine a penlight
through the eyepiece
2
,At the commencement of examination, if the keratometer mires look blurry or
doubled to the examiner, what should be done? - ANSWER-The focusing knob
should be adjusted
The joystick should be used to move the barrel
An ophthalmometer is also known as a - ANSWER-keratometer.
If a patient comes in for a keratometry reading, a gonioscopy, and instillation of
eye drops, which should be performed first? - ANSWER-Keratometry reading
Which of the following keratometry readings is considered shorthand and thus
omits the axis of the flatter meridian? - ANSWER-OD 42..50 x 85
Conventionally, the first number in a written keratometry reading is the lowest.
What does it correspond to? - ANSWER-The flattest corneal meridian
If a patient has had refractive surgery, a direct keratometry reading will be -
ANSWER-inaccurate
To ensure accuracy, the keratometer must be - ANSWER-periodically calibrated.
properly maintained. protected from dust.
What part of the cornea does the keratometer measure? - ANSWER-Optic cap
"Against the rule" refers to the corneal astigmatism when - ANSWER-the
horizontal meridian is steeper than the vertical meridian.
3
, The keratometer measures - ANSWER-the curvature of the anterior surface of the
cornea.
The Goldman Applanation Tonometer measures what? - ANSWER-Intraocular
pressure
The normal range of intraocular pressure is between - ANSWER-10 and 22
mmHg.
The tonometer tip can be disinfected by - ANSWER-wiping it with alcohol for 10
seconds.
soaking in 3% hydrogen peroxide for 10 minutes.
Ophthalmic assistants are responsible for calibrating the tonometer. True or False?
- ANSWER-False
A patient with conjunctivitis comes in the clinic for contact tonometry. What
should you do? - ANSWER-Use another method or reschedule the patient for a
future date
All of the following are variables that can result in incorrectly high intraocular
pressure readings except - ANSWER-patient is myopic.
All of the following are instruments for attaining an intraocular pressure reading
except - ANSWER-Campbell tonometer.
The fastest method of attaining a tonometry reading is - ANSWER-Tono-Pen.
4
Answered Questions / Certified Ophthalmic
Assistant Exam 2026 Prep Test Bank (A review
of 400 Correctly Answered Practice Questions)
Another name for near-sightedness is - ANSWER-myopia.
The inability to focus due to loss of lens elasticity is called - ANSWER-
presbyopia.
A patient who has called into the clinic because of a chemical burn to the eye
should be told to do what before coming in? - ANSWER-Irrigate the affected eye,
continually, for at least 10 to 15 minutes
All of the following information should be collected from the patient while taking
the history of a present condition except
A. onset.
B. location.
C. duration.
D. desired medication. - ANSWER-desired medication.
What do you do if a patient prefers only to speak to the physician? - ANSWER-
Comply with their request and notify the physician
What types of medications or supplements increase a patient's propensity to bleed,
exacerbating certain eye diseases? - ANSWER-Blood thinners
1
,A patient suffering from distorted vision such as "fuzzy" or "minified" objects may
be suffering from - ANSWER-macular edema.
A patient who reports seeing an aura consisting of flashing lines in a zigzag pattern
may be suffering from - ANSWER-scintillating scotoma.
Which of the following is not part of history taking? - ANSWER-Contrast
sensitively
A patient suffering from conjunctivitis will typically present what symptom? -
ANSWER-Discharge from the eye Scratchy feeling in the eye. Hazy vision
Diplopia is another name for - ANSWER-double vision
If a patient is suffering from monocular diplopia - ANSWER-double vision will
persist when one eye is covered.
Asking whether or not a patient wears contact lenses or eyeglasses is part of the -
ANSWER-ocular history.
What is the radius of the corneal curvature useful for? - ANSWER-Fitting contact
lenses
If a patient's eyesight is very poor and they cannot focus on the target inside the
keratometer, what should be done to assist them? - ANSWER-Shine a penlight
through the eyepiece
2
,At the commencement of examination, if the keratometer mires look blurry or
doubled to the examiner, what should be done? - ANSWER-The focusing knob
should be adjusted
The joystick should be used to move the barrel
An ophthalmometer is also known as a - ANSWER-keratometer.
If a patient comes in for a keratometry reading, a gonioscopy, and instillation of
eye drops, which should be performed first? - ANSWER-Keratometry reading
Which of the following keratometry readings is considered shorthand and thus
omits the axis of the flatter meridian? - ANSWER-OD 42..50 x 85
Conventionally, the first number in a written keratometry reading is the lowest.
What does it correspond to? - ANSWER-The flattest corneal meridian
If a patient has had refractive surgery, a direct keratometry reading will be -
ANSWER-inaccurate
To ensure accuracy, the keratometer must be - ANSWER-periodically calibrated.
properly maintained. protected from dust.
What part of the cornea does the keratometer measure? - ANSWER-Optic cap
"Against the rule" refers to the corneal astigmatism when - ANSWER-the
horizontal meridian is steeper than the vertical meridian.
3
, The keratometer measures - ANSWER-the curvature of the anterior surface of the
cornea.
The Goldman Applanation Tonometer measures what? - ANSWER-Intraocular
pressure
The normal range of intraocular pressure is between - ANSWER-10 and 22
mmHg.
The tonometer tip can be disinfected by - ANSWER-wiping it with alcohol for 10
seconds.
soaking in 3% hydrogen peroxide for 10 minutes.
Ophthalmic assistants are responsible for calibrating the tonometer. True or False?
- ANSWER-False
A patient with conjunctivitis comes in the clinic for contact tonometry. What
should you do? - ANSWER-Use another method or reschedule the patient for a
future date
All of the following are variables that can result in incorrectly high intraocular
pressure readings except - ANSWER-patient is myopic.
All of the following are instruments for attaining an intraocular pressure reading
except - ANSWER-Campbell tonometer.
The fastest method of attaining a tonometry reading is - ANSWER-Tono-Pen.
4
