JCAHPO COA Certified Ophthalmic Assistant Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the JCAHPO COA Certified Ophthalmic Assistant Vocabulary Games
4 free word games built on 42 JCAHPO COA Certified Ophthalmic Assistant terms across 22 topics. Every game deals terms at random and shows what each term means, so you can keep playing as long as you like.
How to Play
- 1.Read the clue and type the term (3 to 6 letters).
- 2.Green: right spot. Yellow: wrong spot. Gray: not in the term.
- 3.Solve it in 6 tries, then read the explanation.
- 1.Swap two neighboring tiles to line up 3 of the same term.
- 2.Longer lines, two lines at once and chains score more.
- 3.Play until no swap can make a line.
- 1.Flip two cards. A matching pair stays face up.
- 2.Each pair you find shows what the term means.
- 3.Clear the board in as few moves as you can.
- 1.Find each listed term in the letter grid.
- 2.Drag across its letters: across, down or diagonally.
- 3.Find all five as fast as you can.
Explore More IJCAHPO Ophthalmic Certifications
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Topics in the JCAHPO COA Certified Ophthalmic Assistant Vocabulary Game
History and documentation
Patient services
Ocular anatomy
Visual assessment
Light reflex testing
Tonometry testing
Visual field testing
Ophthalmic pharmacology
Refraction and retinoscopy
Ophthalmic imaging
Professional standards
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 do the COA vocabulary games work?
There are 4 games built on 42 COA terms. In Guess the Term, a clue describes one term and you have six tries to spell it, with green, yellow and gray letters showing how close you are. In Term Match, six terms appear as colored tiles; swap neighbors to line up three or more of the same term, and each match shows what the term means. In Term Pairs, twelve face-down cards hide six pairs of terms; flip two at a time to find each pair, and every pair you find shows what the term means. In Term Search, five terms hide in a grid of letters, reading across, down or diagonally; drag across a term to circle it, and each term you find shows what it means.
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.