JCAHPO COA Certified Ophthalmic Assistant Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the JCAHPO COA Certified Ophthalmic Assistant Vocabulary Game
A free word game for the JCAHPO COA Certified Ophthalmic Assistant exam. Each round shows a clue for one of 42 exam terms across 22 topics. Recall the term, spell it out, then read a short explanation. Rounds pick a random term, so you can keep playing as long as you like.
How to Play
- 1Read the clue and type a term with the right number of letters (3 to 6). Abbreviations count: type the letters only.
- 2Press Check Answer or Enter. Each letter changes color to show how close you are.
- 3You have 6 tries. Stuck? Need a hint? asks the AI tutor for a nudge without giving the term away.
- 4After the round, read the explanation, ask the AI to explain it, share your result, or press Next.
- ARight letter, right spot
- AIn the term, wrong spot
- ANot in the term
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Topics in the JCAHPO COA Certified Ophthalmic Assistant Vocabulary Game
History and documentation
Patient services
Ocular anatomy
Visual assessment
Pupil assessment
Tonometry testing
Visual field testing
Ophthalmic pharmacology
Refraction and retinoscopy
Ophthalmic imaging
Ethics and regulatory
Ocular motility testing
Lensometry measurement
Ocular biometry
Supplemental testing
Surgical assisting
Keratometry measurement
Diagnostic ultrasound
Ocular microbiology
Optics and spectacles
Contact lenses
Equipment maintenance
Sources for these terms (50)
- IJCAHPO — COA Examination Content Areas (Effective 8/1/2025) · Source checked 2026-11-01
- IJCAHPO — Core Examination Content Areas Breakdown · Source checked 2026-11-01
- IJCAHPO — Core Criteria Handbook for Certification and Recertification: COA | COT | COMT (2nd Edition) · Source checked 2026-11-01
- MedlinePlus — Refractive Errors · Source checked 2026-11-01
- NCI Dictionary of Cancer Terms — ptosis · Source checked 2026-11-01
- NCI Dictionary of Cancer Terms — macular degeneration · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Standard eye exam · Source checked 2026-11-01
- eCFR — 21 CFR § 886.4750 Ophthalmic eye shield · Source checked 2026-11-01
- eCFR — 21 CFR § 349.3 Definitions (Ophthalmic Drug Products for OTC Human Use) · Source checked 2026-11-01
- eCFR — 21 CFR § 349.10 Ophthalmic astringent · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Ophthalmoscopy · Source checked 2026-11-01
- NCI Dictionary of Cancer Terms — cornea · Source checked 2026-11-01
- NCI Dictionary of Cancer Terms — retina · Source checked 2026-11-01
- NCI Dictionary of Cancer Terms — uvea · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Visual acuity test · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1150 Visual acuity chart · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1170 Color vision tester · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1460 Stereopsis measuring instrument · Source checked 2026-11-01
- NCI Dictionary of Cancer Terms — pupil · Source checked 2026-11-01
- NCI Dictionary of Cancer Terms — iris · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Anisocoria · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Tonometry · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1930 Tonometer and accessories · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1330 Amsler grid · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Home vision tests · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1810 Tangent screen (campimeter) · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Visual field · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Fluorescein eye stain · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Refraction · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Nearsightedness · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1380 Diagnostic condensing lens · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1120 Ophthalmic camera · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Fluorescein angiography · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1400 Maddox lens · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1650 Ophthalmic bar prism · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1665 Ophthalmic rotary prism · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1420 Ophthalmic lens gauge · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1425 Lens measuring instrument · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Eye and orbit ultrasound · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1800 Schirmer strip · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Schirmer test · Source checked 2026-11-01
- eCFR — 21 CFR § 886.3600 Intraocular lens · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Cataract removal · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1350 Keratoscope · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Corneal ulcers and infections · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1415 Ophthalmic trial lens frame · Source checked 2026-11-01
- eCFR — 21 CFR § 886.5842 Spectacle frame · Source checked 2026-11-01
- eCFR — 21 CFR § 886.5916 Rigid gas permeable contact lens · Source checked 2026-11-01
- eCFR — 21 CFR § 886.1850 AC-powered slitlamp biomicroscope · Source checked 2026-11-01
- MedlinePlus Medical Encyclopedia — Slit-lamp exam · Source checked 2026-11-01
About the COA Certified Ophthalmic Assistant Exam
The Certified Ophthalmic Assistant (COA) is the entry-level core certification from IJCAHPO for allied ophthalmic personnel. The 200-question multiple-choice exam covers patient evaluation, clinical procedures, pharmacology, imaging, optics, and office responsibilities across five major content domains weighted toward assessments and interventions.
Exam sponsor: IJCAHPO. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Questions
200 questions
Time Limit
3 hours
Passing Score
Criterion-referenced (modified Angoff)
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Frequently Asked Questions
Is the COA vocabulary game free?
Yes. The game is free to play with no sign-up. Signing in adds AI explanations for any term.
How does the COA vocabulary game work?
Each round shows a clue for one of 42 COA terms. Guess the term in six tries: green means the right letter in the right spot, yellow means the letter is in the term but in another spot, and gray means it is not in the term. After the round, read the explanation and play the next term.
Where do the COA terms come from?
OpenExamPrep researched each term from the IJCAHPO content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
How many questions are on the COA exam?
The current COA multiple-choice examination contains 200 questions and uses the 22-area content outline effective August 1, 2025.
How long is the COA exam?
The COA examination has a 180-minute limit and is scheduled at a Pearson VUE test center after IJCAHPO approves eligibility.