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Certified Ophthalmic Assistant (COA) Study Guide – JCAHPO: Questions With Solutions
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Certified Ophthalmic Assistant (COA) Study Guide –JCAHPO: Questions With Solutions
When reading add power on the lensometer take the difference between the
triple line target distance reading and the _____.
A. Single line distance reading
B. Triple line bifocal reading
C. Single line bifocal reading
D. Zero point Right Ans - B. Triple line bifocal reading
What is a yellow top on eye drops for?
A. Carbonic anhydrase inhibitors
B. Prostaglandin analogues
C. Beta-blockers
D. Cycloplegics Right Ans - C. Beta-blockers
* Can also be light blue!
* Used to treat glaucoma; it helps to decrease the production of aqueous
humor and reduce IOP
* Examples:
- Timolol
- Levobunolol
- Betaxolol (light blue top)
The purpose of keratometry is to measure: Right Ans - The curvature of the
anterior corneal surface
An eye alignment deviation that is not present unless fusion is disrupted is
called a:
A. Phoria
B. Tropia
C. Hyper deviation
D. Eso deviation Right Ans - A. Phoria
* Tropia and Phorias are terms to describe when the eyes are not in alignment
with each other
* A tropia is always present, while phorias are there "some of the time," such
as when the patient is tired or when fusion is broken (you cover an eye and it
starts to drift).
,The endpoint of the Maddox Rod test occurs when:
A. The red dot is superimposed on the light
B. The red line goes through the light
C. The red line disappears
D. The red line is above the light Right Ans - B. The red line goes through
the light
A condition in which blood has settled in the bottom half of the anterior
chamber of the eye is called a:
A. Subconjunctival hemorrhage
B. Pink eye
C. Hyphema
D. Glaucoma Right Ans - C. Hyphema
* A subconjunctival hemorrhage will only involve the white of the eye, not the
center, and will typically have no pain associated with it
* A hyphema will only affect the center of the eye, behind the cornea, and will
usually have pain and additional symptoms associated with it
An outward deviation of the eye(s) is a(n) ____ and an inward deviation of the
eye(s) is called a(n) ______.
A. Esodeviation / Exodeviation
B. Esophoria / Exophoria
C. Exodeviation / Esodeviation
D. Exophoria / Esophoria Right Ans - C. Exodeviation / Esodeviation
* Esotropia means that one eye is deviated inward and is often called crossed
eyes
* Exotropia is when one or both eyes look outward, often called wall-eyed
* A tropia is always present, while phorias are there "some of the time".
Kinetic perimetry means that the light stimulus is:
A. Moving from an area of non-seeing to an area of presumed seeing
B. A stimulus that is presented to the patient but not moved
C. A situation in which visual fields are performed without either eye being
occluded
D. The stimulus is jiggled slightly so the patient can see it Right Ans - A.
Moving from an area of non-seeing to an area of presumed seeing
* The two most commonly used types of perimetry are Goldmann kinetic
perimetry and threshold static automated perimetry
,What is the name of the condition where a fibrovascular growth forms on the
conjunctiva to a portion of the cornea?
A. Pterygium
B. Pinguecula
C. Exteration
D. Entropion Right Ans - A. Pterygium
* A pinguecula is characterized by a yellowish raised growth on the
conjunctiva typically at the nasal or temporal conjunctiva near the edge of
cornea
* Pterygium is the triangular shape of vascularized conjunctival tissue on the
cornea and it invades the cornea (known as fibrovascular invasion of the
cornea)
Forward displacement of the eye in it's bony socket causing the eye to bulge
forward is termed:
A. Exophthalmos
B. Neoplasia
C. Buphthalmos
D. Exophasia Right Ans - A. Exophthalmos
* Exophthalmos is a normal-sized globe that is being pushed forward by a
space-occupying lesion in the orbit.
* Buphthalmos is a normally-positioned globe that is enlarged due to elevated
intraocular pressure, i.e., glaucoma
_____ is the distance from the front surface of the cornea to the back side of a
lens that is mounted in a frame and being worn by the patient.
A. Back vertex
B. Lens vertex
C. Vertex distance
D. Front vertex Right Ans - C. Vertex distance
A non-contact lens to examine the macula is:
A. Goniolens
B. Hruby lens
C. Koeppe lens
D. Maddox lens Right Ans - B. Hruby lens
* It is held immediately in front of the cornea and forms a virtual, erect, and
minified image of the retina
* A Koeppe lens allows examination of both the angle and the posterior pole
, Which blood vessels have valves?
A. Veins
B. Arteries
C. Capillaries
D. Arterioles Right Ans - A. Veins
What major microbial categories may be associated with eye infections?
A. Bacteria and viruses
B. Fungus
C. Parasites
D. All of the above Right Ans - D. All of the above
- Bacteria
- Viruses
- Fungus
- Parasites
With the Rule Astigmatism Right Ans - A condition in which the steepest
corneal meridian is in the vertical plane, an example of keratometer reading
for a patient exhibiting this condition would be:
K's: 42.00 @ 180/45.00 @ 90
Pantoscopic tilt Right Ans - The angle of an eyeglass lens in relation to the
vertical plane
Inflammation of the tear sac associated with faulty tear drainage is:
A. Trichiasis
B. Blepharitis
C. Conjunctivitis
D. Dacryocystitis Right Ans - D. Dacryocystitis
The swelling of the optic disc with engorged blood vessels is known as:
A. Papilledema
B. Endophthalmitis
C. Optic nerve compression
D. Anterior ischemic optic neuropathy Right Ans - A . Papilledema
* Endophthalmitis is a purulent inflammation of the intraocular fluids
(vitreous and aqueous) usually due to infection
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