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COA Exam: Questions With Correct Solutions (A+)
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COA Exam: Questions With Correct Solutions (A+)
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COA Exam: Questions With Correct Solutions (A+)Name the nine components of the ophthalmic history. Right Ans - Chief
complaint, present illness, past ocular history, ocular medications, general
medical and surgical history, systemic medications, allergies, social history
and family history.
Why is it important to specifically ask a patient about the medications they are
taking? Right Ans - Because certain medications may affect the eyes.
What is the proper response to a patient's request from the ophthalmic
technician for medical advice or a diagnosis? Right Ans - Refer the patient
to the ophthalmologist.
What is the term used for the reason for the patient's visit? Right Ans -
Chief complaint
What elements are important in social history taking? Right Ans - Smoking,
alcohol, and drug use.
Prior use of topical ocular pharmaceutical agents is part of a patient's
___________. Right Ans - Past ocular history
Pertinent family history of a patient should include which relatives? Right
Ans - Parents, grandparents, and genetic siblings
A patient describing an experience of getting hives after taking sulfa drugs is
providing information about ______. Right Ans - An allergic reaction
What is the term for the spasmodic, rhythmic dilating, and contracting
pupillary movements during pupil function testing? Right Ans - Hippus
What is the name of the test used for detecting a relative afferent pupillary
defect? Right Ans - Swinging flashlight test
Which muscle of the iris constricts in bright light? Right Ans - Sphincter
What is pupil dilation termed? Right Ans - Mydriasis
,What is the term used when there is a difference in pupil size Right Ans -
Anisocoria
What is pupillometry? Right Ans - The measurement of pupillary
diameters.
What is the name of the reflexive reaction that occurs when a light is directed
into one pupil and the pupil of the opposite eye simultaneously reacts?
Right Ans - Consensual pupillary reaction
Calibration of the applanation tonometer should be checked approximately
every _____ months. Right Ans - Two
When cleaning the goniolens, what is used to rinse off the methycellulose?
Right Ans - Warm running water
When replacing a light bulb _______ can diminish its effectiveness and life.
Right Ans - Oil from fingers
Diagnostic lenses that contact the eye can be sterilized using? Right Ans -
Ethylene Oxide gas
How should the removable glass slides inside the American Optical acuity
projector be cleaned? Right Ans - Wipe with clean, soft lint-free towel or
photographic lens paper.
If dust accumulates on the mirror of the slit lamp, the technician may clean it
by using what cleaning methods? Right Ans - A lint-free cloth, a lens brush,
or blast of air.
Who should repair and maintain equipment such as a laser? Right Ans - A
qualified service technician.
Which accessories are used to check the calibration of an
ophthalmometer/keratometer? Right Ans - Three test balls made of steel,
also called "Lensco Meter"
What should be used to clean the accessible lenses of a phoropter? Right
Ans - Photographic lens cleaner and lens tissue
, What size letters (optotypes) are typically used to calibrate visual acuity
projectors? Right Ans - 20/200
What is the name of the instrument used to neutralize lenses? Right Ans -
Lensometer
When recording prism in spectacle Rx, what does the abbreviation BO stand
for? Right Ans - Base out
What is determined by focusing the thin lines in a manual lensometer?
Right Ans - The sphere of the spectacle Rx is determined by the thin lines.
What is the first step in performing lensometry? Right Ans - Focus the
eyepiece.
If you cannot center the thick and thin lines in the lensometer, the lens has
________. Right Ans - Ground-in prism.
Each black ring seen in the lensometer eyepiece reticle measures how much
prism? Right Ans - 1 diopter for each ring.
When performing lensometry, what is indicated if both thin and wide lines are
in focus at the same time? Right Ans - The lens is spherical.
What is the technique used to measure the radius of curvature of the anterior
corneal surface? Right Ans - A-Scan Keratometry Length Measurements
Keratometry is performed with a device called a ___________. Right Ans -
Keratometer or ophthalmometer
Give three examples in which a keratometry measurement would be useful.
Right Ans - Contact lens fitting, refractive surgery, intra ocular lens
calculations, keratoconos
Keratometry is measured in ______. Right Ans - Diopters
An unfocused eyepiece can lead to an error of _________. Right Ans - 1
diopter in the K reading
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