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COA Practice Test Questions & Answers – Certified Ophthalmic Assistant Exam Prep PDF

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Ace your Certified Ophthalmic Assistant (COA) exam with this targeted set of practice questions and verified answers. This PDF includes essential topics such as patient history-taking, ocular emergencies, pharmacology, diagnostic testing, visual acuity assessment, contact lens care, surgical assisting, glaucoma, retinal conditions, and ophthalmic equipment. Each question is designed to reflect the actual COA exam format, with clear explanations and rationales to reinforce key concepts. Ideal for COA candidates, ophthalmic technicians, and medical assistants preparing for certification.

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COA (CERTIFIED OPHTHALMIC ASSISTANT)
EXAM QUESTIONS WITH CORRECT
SOLUTIONS GRADED A+


A patient calls the office giving the history that they had cataract surgery 2 yrs
ago. For the past 2 days he has noticed flashes of light in the operated eye.



A. Patient should call back to see an ophthalmologist if the

symptoms persist

B. Patient should be assured that "flashes of light" is a

normal occurrence in aphakic surgery

C. Patient should see an ophthalmologist within 24 hours

D. Patient should see an ophthalmologist within one month --ANSWER--C.
Patient should see an ophthalmologist w/i 24hr

Flashes of light coming across a field of vision

often is a forerunner of a retinal detachment;

therefore the patient with this symptom should

be seen promptly



Which of the following is included in a past medical history?



A. details of ocular treatment

Page 1 of 51

,B. diabetes in parent

C. drug allergies

D. Family history --ANSWER--C. drug allergies



Which of the following symptoms suggests an urgent problem?

A. difficulty seeing at night

B. Increased difficulty in reading fine print

C. Sudden onset of blurry vision and halos around lights

D. Visual flashes followed by headache --ANSWER--C. Sudden onset of blurry
vision and halos around lights

Seeing colored haloes around lights is an impending sign of acute angle-closure
glaucoma



In taking a history, which of the following is the most important?

A. Allergies and drug reactions

B. Medications taken at present

C. Past ocular history

D. The chief complaint --ANSWER--D. The chief complaint



The chief complaint is the main reason why the patient is in the
ophthalmologist's office and should be noted by the ophthalmic assistant




Page 2 of 51

,Anisocoria is described as



A. unequal corneal diameters

B. differing iris colors

C. different refractive errors

D. difference in pupil size --ANSWER--D. difference in pupil size




The specific reason a patient is being seen for an eye exam is referred to as the



A. patient history

B. chief complaint

C. status of the patient's visual acuity

D. onset of any current vision problems --ANSWER--B. chief complaint

The chief complaint should be recorded in the

patients record as a quote from the patient as

the reason for the visit to the doctor



A past ocular history includes all of the follow with the exception of



A. strabismus surgery at the age of 5

B. first reading glasses 6 yrs ago

Page 3 of 51

, C. a cousin diagnosed with glaucoma 10 yrs ago

D. red eye a month ago --ANSWER--C. a cousin diagnosed with glaucoma 10
yrs ago



A family history includes all of the following with the exception of the patient's



A. mother

B. daughter

C. spouse

D. brother --ANSWER--C. spouse; a spouse is not related by blood.



A patient who reports waviness when looking at straight lines or letters
(metamorphopsia) MOST likely has



A. astigmatism

B. cataract

C. macular disease

D. optic neuritis --ANSWER--C. macular disease

macular disease is the degeneration of the

sensory cells of the macula resulting in a loss of

central vision




Page 4 of 51

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