COA CERTIFIED OPHTHALMIC
ASSISTANT EXAM 2025 NEWEST
ACTUAL EXAM QUESTIONS AND 100%
CORRECT ANSWERS
_______ is any irritation or inflammation of the
conjunctiva. Correct Answer Conjunctivitis
Conjunctivitis may be _______, _______, or _______.
Correct Answer Allergic, viral, bacterial
Sudden painless vision loss, which may continue to
deteriorate over a few days, and may not recover is known
as _______. Correct Answer Ischemic Optic Neruopathy
Forward displacement of the eye in its bony socket
causing the eye to bulge forward is termed _______.
Correct Answer Proptosis.exophthalmus
The cornea provides approximately _______ of the
refractive power of the eye. Correct Answer 2/3
The absence of a lens in an eye is called _______.
Correct Answer Aphakia
The presence of an intraocular lens (IOL) is called
_______. Correct Answer Pseudophakia
,_______ is a chronic inflammation of the eye lid margin.
Correct Answer Blepharitis
Name the retinal receptors that function best in dim
lighting, number about 125 million and are found in the
periphery of the retina. Correct Answer Rods
Name the retinal receptors that are responsible for color
vision, number about 6 million and are found in the
macula. Correct Answer Cones
In fundus photography, when the camera is too far from
the eye, a _______ will form around the image. Correct
Answer Blue-grey halo
"Diagnostic" or "standardized" _______ are performed for
quantitative evaluations of a tissue's structure, reflectivity
and sound absorption. Correct Answer A-scans
_______ photography is used to photograph the anterior
segment of the eye. Correct Answer Slit-lamp
Specular photomicrography is a method of evaluating the
_______ surface of the cornea. Correct Answer
Endothelial
_______ photography documents the posterior segment of
the eye. Correct Answer Fundus
,_______ devices create three dimensional digital images
of the optic nerve, and retina. Correct Answer
Tomography
Three of the most common tomographic image devices
are _______, _______, and _______. Correct Answer
OCT - optical coherence tomography, HRT - Heidelberg
retinal tomography, and GDx scanner laser polorimeter
The data provided by tomographic devices are useful in
evaluating progressive _______ and _______ damage.
Correct Answer Optic nerve and retinal nerve fiber layer
Ophthalmic photography serves to _______ and _______
ophthalmic conditions. Correct Answer Document and
diagnose
Devine refractometry. Correct Answer The measurement
of the refractive error of an eye
What is the name of the instrument that houses various
lenses to determine the refractive error of an eye? Correct
Answer Phoropter
What is an important factor when preparing a patient for
refraction? Correct Answer The refractionist must explain
to the patient to choose the lens that provides the clearest
vision.
, What is a common mistake made by the refractionist?
Correct Answer Moving or flipping the lenses too quickly
for the patient.
What are three appropriate starting points for refracting a
patient? Correct Answer Retinoscopy, autorefractometry,
or patient's current spectacle Rx
In what order should refinement of a refraction be
performed? Correct Answer Sphere, axis, then power of
cylinder
What accessory phoropter lens is utilized to refine cylinder
axis power? Correct Answer Jackson Cross Cylinder
Name the two methods of refractometry. Correct Answer
Objective and subjective
In refractometry, the _______ method requires the patient
to give answers to the examiner. Correct Answer
Subjective
When is the spherical equivalent best used in a spectacle
Rx? Correct Answer If a patient is an adult who has never
worn glasses and requires a large astigmatic correction
What is the name of the test to determine the correct
myopic correction using red/green filter on the projector?
Correct Answer Duochrome test
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