CERTIFIED OPHTHALMIC ASSISTANT (COA)
EXAM QUESTIONS WITH CORRECT
ANSWERS
What procedure using an Argon Laser is thought to destroy areas of ischemic
retina? --ANSWER--Panretinal photocoagulation or panretinal laser
What type of intraocular injection is made at the Pars plana site with a needle
and syringe of medication? --ANSWER--Intravitreal injection
What are the parallel movements of the eyes from one gaze position to another -
-ANSWER--Versions
What is the movement of one eye called --ANSWER--Duction
Versions and ductions are tested by using ________ to test the six pairs of
_______ muscles. --ANSWER--Six Cardinal positions, yoke
The movement of the eye outward toward the temple is called _____ --
ANSWER--Abduction
What is the technique used to measure the radius of curvature of the anterior
corneal surface? --ANSWER--A-Scan Keratometry Length Measurements
Page 1 of 148
,Keratometry is performed with a device called a ______ --ANSWER--
Keratometer or ophthalmometer
Give three examples in which a Keratometry measurement would be useful. --
ANSWER--Contact lens fitting, refractive surgery, intraocular lens calculations,
keratoconus
How are systemic medications administered? --ANSWER--Orally, injection
(subcutaneously or intramuscularly) or intravenously
How should drops be properly instilled into a patient's eye? --ANSWER--Into
the lower cul de sac (lower fornix)
What does the term idiosyncrasy refer to with ophthalmic drugs? --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? --ANSWER--
Lensometer (Lensmeter)
When recording a prism in a spectacle prescription, what does the abbreviation
BO stand for? --ANSWER--Base out
Page 2 of 148
,What is determined by focusing the thin lines in a manual lensometer? --
ANSWER--The sphere of the spectacle prescription
What is the first step in performing lensometry? --ANSWER--Focus the
eyepiece
When PRK is being performed, time remaining in the procedure should be
announced in increments of ______ --ANSWER--10 seconds
Name the organism that is most destructive to the eye. --ANSWER--
Pseudomonas Aeruginosa
Keratometry is measured in _____ --ANSWER--Diopters
Measuring intraocular pressure is also called _____ --ANSWER--Tonometry
The higher the intraocular pressure of an eye, the ____ the eye --ANSWER--
Harder
Applanation tonometry displaces less than ____ of aqueous. --ANSWER--0.5
microliters
Page 3 of 148
, When recording intraocular pressure, the reading on the Goldmann applanation
tonometer scale should be multiplied by ____. --ANSWER--10
Because there are no rods or cones in the optic nerve head a____ blind spot is
created in the normal visual field. --ANSWER--Physiologic
A defect in the patient's superior temporal retina, will affect the patient's ____
field of vision. --ANSWER--Inferior nasal
The two basic methods employed to map the field of vision are ____ and ____
perimetry. --ANSWER--Kinetic, static
A localized area of reduced sensitivity in a visual field that is surrounded by an
area of greater sensitivity is termed a ____. --ANSWER--Scotoma
And unfocused eyepiece can lead to an error of ____. --ANSWER--1 diopter in
the K reading
How many meridians are measured in keratometry? --ANSWER--2 meridians
(usually 90° apart)
The average K reading is ____. --ANSWER--43-44 diopters
Page 4 of 148
EXAM QUESTIONS WITH CORRECT
ANSWERS
What procedure using an Argon Laser is thought to destroy areas of ischemic
retina? --ANSWER--Panretinal photocoagulation or panretinal laser
What type of intraocular injection is made at the Pars plana site with a needle
and syringe of medication? --ANSWER--Intravitreal injection
What are the parallel movements of the eyes from one gaze position to another -
-ANSWER--Versions
What is the movement of one eye called --ANSWER--Duction
Versions and ductions are tested by using ________ to test the six pairs of
_______ muscles. --ANSWER--Six Cardinal positions, yoke
The movement of the eye outward toward the temple is called _____ --
ANSWER--Abduction
What is the technique used to measure the radius of curvature of the anterior
corneal surface? --ANSWER--A-Scan Keratometry Length Measurements
Page 1 of 148
,Keratometry is performed with a device called a ______ --ANSWER--
Keratometer or ophthalmometer
Give three examples in which a Keratometry measurement would be useful. --
ANSWER--Contact lens fitting, refractive surgery, intraocular lens calculations,
keratoconus
How are systemic medications administered? --ANSWER--Orally, injection
(subcutaneously or intramuscularly) or intravenously
How should drops be properly instilled into a patient's eye? --ANSWER--Into
the lower cul de sac (lower fornix)
What does the term idiosyncrasy refer to with ophthalmic drugs? --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? --ANSWER--
Lensometer (Lensmeter)
When recording a prism in a spectacle prescription, what does the abbreviation
BO stand for? --ANSWER--Base out
Page 2 of 148
,What is determined by focusing the thin lines in a manual lensometer? --
ANSWER--The sphere of the spectacle prescription
What is the first step in performing lensometry? --ANSWER--Focus the
eyepiece
When PRK is being performed, time remaining in the procedure should be
announced in increments of ______ --ANSWER--10 seconds
Name the organism that is most destructive to the eye. --ANSWER--
Pseudomonas Aeruginosa
Keratometry is measured in _____ --ANSWER--Diopters
Measuring intraocular pressure is also called _____ --ANSWER--Tonometry
The higher the intraocular pressure of an eye, the ____ the eye --ANSWER--
Harder
Applanation tonometry displaces less than ____ of aqueous. --ANSWER--0.5
microliters
Page 3 of 148
, When recording intraocular pressure, the reading on the Goldmann applanation
tonometer scale should be multiplied by ____. --ANSWER--10
Because there are no rods or cones in the optic nerve head a____ blind spot is
created in the normal visual field. --ANSWER--Physiologic
A defect in the patient's superior temporal retina, will affect the patient's ____
field of vision. --ANSWER--Inferior nasal
The two basic methods employed to map the field of vision are ____ and ____
perimetry. --ANSWER--Kinetic, static
A localized area of reduced sensitivity in a visual field that is surrounded by an
area of greater sensitivity is termed a ____. --ANSWER--Scotoma
And unfocused eyepiece can lead to an error of ____. --ANSWER--1 diopter in
the K reading
How many meridians are measured in keratometry? --ANSWER--2 meridians
(usually 90° apart)
The average K reading is ____. --ANSWER--43-44 diopters
Page 4 of 148
