Certified Ophthalmic Assistant (COA) Final Exam
|QUESTIONS WITH 100%CORRECT
ANSWERS|VERIFIED|LATEST UPDATE 2025!!
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
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
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
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
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
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
Keratometry measures the____ of the anterior curvature of the cornea. -
(ANSWER)Central 3.3 mm
|QUESTIONS WITH 100%CORRECT
ANSWERS|VERIFIED|LATEST UPDATE 2025!!
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
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
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
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
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
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
Keratometry measures the____ of the anterior curvature of the cornea. -
(ANSWER)Central 3.3 mm
