Certified Ophthalmic Assistant (COA) With
Complete Solutions
Graded A+
QUESTIONS AND ANSWERS
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
The diffusion of oxygen through a contact lens material is referred to as ____.. ANSWER -
DK value
True or False: The application and evaluation of a diagnostic lens on the eye is the best way
to fit a contact lens. ANSWER -True
Name the instrument used to determine the posterior surface radius of curvature of a rigid
contact lens.. ANSWER -Radiuscope and or Contacto Gauge
, Increased thirst, excessive urine, production, increased hunger and weight loss are
characteristics of which endocrine disease?. ANSWER -Diabetes insipidus
What finding can occur 6 to 8 hours after a metallic foreign body enters the cornea?.
ANSWER -Rust ring
Why are alkali burns more serious than acid burns on the cornea?. ANSWER -Alkali burns
penetrate deeper
Variability in the functions of levator and extraocular muscle is characteristic in which
systemic disease?. ANSWER -Myasthenia gravis
What is the name of the mucous membrane covering the interior sclera?. ANSWER -
(Bulbar) Conjunctiva
What type of glaucoma constitutes an ocular emergency?. ANSWER -Acute angle-closure
glaucoma
Protocols for pressure patching or shields require that adhesive tape must be applied from
the ____ to the ____.. ANSWER -Bridge of the nose, ear lobe
What is the minimum thickness of safety lenses?. ANSWER -3.0 mm
What is the name of the important screening process used in emergencies determine the
patient's ocular needs?. ANSWER -Triage
What is a hemorrhage confined to the anterior chamber termed?. ANSWER -Hyphema
____ drugs induce contractions of the iris sphincter. ANSWER -Miotic
Name the three types of ophthalmic preparations placed directly in the eye.. ANSWER -
Solutions, suspensions, ointments
Complete Solutions
Graded A+
QUESTIONS AND ANSWERS
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
The diffusion of oxygen through a contact lens material is referred to as ____.. ANSWER -
DK value
True or False: The application and evaluation of a diagnostic lens on the eye is the best way
to fit a contact lens. ANSWER -True
Name the instrument used to determine the posterior surface radius of curvature of a rigid
contact lens.. ANSWER -Radiuscope and or Contacto Gauge
, Increased thirst, excessive urine, production, increased hunger and weight loss are
characteristics of which endocrine disease?. ANSWER -Diabetes insipidus
What finding can occur 6 to 8 hours after a metallic foreign body enters the cornea?.
ANSWER -Rust ring
Why are alkali burns more serious than acid burns on the cornea?. ANSWER -Alkali burns
penetrate deeper
Variability in the functions of levator and extraocular muscle is characteristic in which
systemic disease?. ANSWER -Myasthenia gravis
What is the name of the mucous membrane covering the interior sclera?. ANSWER -
(Bulbar) Conjunctiva
What type of glaucoma constitutes an ocular emergency?. ANSWER -Acute angle-closure
glaucoma
Protocols for pressure patching or shields require that adhesive tape must be applied from
the ____ to the ____.. ANSWER -Bridge of the nose, ear lobe
What is the minimum thickness of safety lenses?. ANSWER -3.0 mm
What is the name of the important screening process used in emergencies determine the
patient's ocular needs?. ANSWER -Triage
What is a hemorrhage confined to the anterior chamber termed?. ANSWER -Hyphema
____ drugs induce contractions of the iris sphincter. ANSWER -Miotic
Name the three types of ophthalmic preparations placed directly in the eye.. ANSWER -
Solutions, suspensions, ointments
