1
COA Exam Practice Test A Questions and
Answers Top Rated Latest Version 2026
What is a tissue or organ called when it is deprived of its
normal blood supply?
ischemic
What is the term for an abnormal physical change that a
physician observes while examining a patient?
A sign
What is a cataract?
an opacification of the crystalline lens
What is a chalazion?
a lump that develops after inflammation and infection of the
meibomian glands
Diabetes mellitus is what type of disease process?
metabolic
What condition has symptoms that include flashes of light in
the corner of the eye, followed by a sensation of a curtain
moving across the vision?
retinal detachment
What is another name for dry eye?
keratoconjunctivitis sicca
The retina examination is often important in detecting which
disease?
Hypertension
What type of herpes simplex virus usually produces genital
infections?
Type 2
Dry eyes are common in which of the following diseases?
Rheumatoid arthritis
What is a cancer that spreads to other parts of the body
called?
,2
Metastatic
The eyes are considered part of which body system?
Nervous
Which of the following diseases is a chronic autoimmune
condition that interferes with proper nerve transmission in
the skeletal muscles?
Myasthenia Gravis
Which of the following is a waste product of metabolism?
carbon dioxide
What is a common eye disorder associated with multiple
sclerosis?
optic neuritis
What is the most common cause of exophthalmos in an
adult?
thyroid eye disease
The occurrence of blindness among people with diabetes
mellitus is ___ times that of the general population.
25
What is the correct transposition of the plus-cylinder
prescription +1.00 +2.00 x90 to its minus-cylinder?
+3.00 -2.00 x180
What is the difference between the power of the upper
segment and the power of the lower segment in a bifocal lens
called?
Add
What is the process of neutralization during retinoscopy?
Finding the lens power that affects movement of the retinal reflex
and fills the pupil with Light
What is a toric cornea characteristic of?
Astigmatism
If the lensmeter mires cannot be centered in the central
portion of the lensmeter target, the lens probably contains
which of the following?
, 3
Prism
The distance portion of an eyeglass lens is +2.00 D and the
bifocal add is +1.00. What is the power of the lens through
the bifocal segment?
+3.00 D
What is a substance called that permits the passage of light
without significant disruption?
Transparent
What type of lens best corrects myopia combined with
astigmatism?
Spherocylindrical lens
What is the first step in performing manual lensometry or
keratometry?
Focus the eyepiece.
What is the power in diopters of a convex lens with a focal
length of 0.50 meter?
2.00 D
In ophthalmology, topical anesthetics are most often used
for what purpose?
preventing discomfort during diagnostic procedures
Which of the following is not used to treat bacterial
infections?
nystatin
Generic drugs that have a name that ends with "lol" are
which of the following?
beta adrenergic blockers
What is the primary function of topical corticosteroids?
anti-inflammatory and antiallergic agents, which reduce swelling
and scarring of the lids and anterior segment
Of the following, which drug is most helpful when performing
both a fundus examination and an objective refraction on a
pediatric patient?
a cycloplegic
COA Exam Practice Test A Questions and
Answers Top Rated Latest Version 2026
What is a tissue or organ called when it is deprived of its
normal blood supply?
ischemic
What is the term for an abnormal physical change that a
physician observes while examining a patient?
A sign
What is a cataract?
an opacification of the crystalline lens
What is a chalazion?
a lump that develops after inflammation and infection of the
meibomian glands
Diabetes mellitus is what type of disease process?
metabolic
What condition has symptoms that include flashes of light in
the corner of the eye, followed by a sensation of a curtain
moving across the vision?
retinal detachment
What is another name for dry eye?
keratoconjunctivitis sicca
The retina examination is often important in detecting which
disease?
Hypertension
What type of herpes simplex virus usually produces genital
infections?
Type 2
Dry eyes are common in which of the following diseases?
Rheumatoid arthritis
What is a cancer that spreads to other parts of the body
called?
,2
Metastatic
The eyes are considered part of which body system?
Nervous
Which of the following diseases is a chronic autoimmune
condition that interferes with proper nerve transmission in
the skeletal muscles?
Myasthenia Gravis
Which of the following is a waste product of metabolism?
carbon dioxide
What is a common eye disorder associated with multiple
sclerosis?
optic neuritis
What is the most common cause of exophthalmos in an
adult?
thyroid eye disease
The occurrence of blindness among people with diabetes
mellitus is ___ times that of the general population.
25
What is the correct transposition of the plus-cylinder
prescription +1.00 +2.00 x90 to its minus-cylinder?
+3.00 -2.00 x180
What is the difference between the power of the upper
segment and the power of the lower segment in a bifocal lens
called?
Add
What is the process of neutralization during retinoscopy?
Finding the lens power that affects movement of the retinal reflex
and fills the pupil with Light
What is a toric cornea characteristic of?
Astigmatism
If the lensmeter mires cannot be centered in the central
portion of the lensmeter target, the lens probably contains
which of the following?
, 3
Prism
The distance portion of an eyeglass lens is +2.00 D and the
bifocal add is +1.00. What is the power of the lens through
the bifocal segment?
+3.00 D
What is a substance called that permits the passage of light
without significant disruption?
Transparent
What type of lens best corrects myopia combined with
astigmatism?
Spherocylindrical lens
What is the first step in performing manual lensometry or
keratometry?
Focus the eyepiece.
What is the power in diopters of a convex lens with a focal
length of 0.50 meter?
2.00 D
In ophthalmology, topical anesthetics are most often used
for what purpose?
preventing discomfort during diagnostic procedures
Which of the following is not used to treat bacterial
infections?
nystatin
Generic drugs that have a name that ends with "lol" are
which of the following?
beta adrenergic blockers
What is the primary function of topical corticosteroids?
anti-inflammatory and antiallergic agents, which reduce swelling
and scarring of the lids and anterior segment
Of the following, which drug is most helpful when performing
both a fundus examination and an objective refraction on a
pediatric patient?
a cycloplegic
