COA® Certification: How to Become a Certified Ophthalmic Assistant

An independent study tool for the IJCAHPO (JCAHPO) Certified Ophthalmic Assistant exam. Not affiliated with or endorsed by IJCAHPO.

To earn Certified Ophthalmic Assistant (COA) certification, you qualify through one of three eligibility pathways, apply to IJCAHPO, and pass a 200-question multiple-choice exam at a Pearson VUE test center or online. IJCAHPO, called JCAHPO in older documents, certifies ophthalmic assistants, technicians and technologists, and it alone decides who is eligible.

IJCAHPO calls COA certification its entry-level core certification. Above it are the Certified Ophthalmic Technician (COT®) and Certified Ophthalmic Medical Technologist (COMT®). Fees and forms change, so we link to IJCAHPO's own pages for those.

COA certification requirements

IJCAHPO lists three eligibility pathways: COA-A1, COA-A2 and COA-A3 (A1, A2 and A3 for short). You need to meet just one.

Pathway	Education or training	Supervised work
COA-A1	Graduate of a program accredited by the International Council of Accreditation (ICA) at the Clinical Assistant level	None required
COA-A2	Graduate of an ICA-accredited program at the Non-Clinical Assistant level (distance-learning programs count)	500 hours under an ophthalmologist in the 12 months before you apply
COA-A3	High school diploma or equivalent, plus an approved independent study course, such as the JCAHPO Career Advancement Tool (JCAT) or the American Academy of Ophthalmology (AAO) Ophthalmic Medical Assisting course	1,000 hours under an ophthalmologist in the 12 months before you apply

ICA accredits these training programs; older IJCAHPO documents use its former name, CoA-OMP. Not sure what kind of program you finished? Ask your school whether it is ICA-accredited, and at which level.

A few more rules:

High school diploma, whatever your pathway. IJCAHPO's FAQ says you need one, or the equivalent, before you apply for COA certification. There is no minimum age.
No CPR card needed. CPR certification is no longer required to apply.
Graduated more than a year ago? If you finished an A1 or A2 program more than 12 months before applying, you also need 18 IJCAHPO continuing education (CE) credits for each year since graduating, all earned in the 36 months before you apply.
Took your A3 course more than three years ago? Take it again, or submit 18 IJCAHPO CE credits for each year past those three years.
Still in school? You can apply up to two months before graduating from a formal training program. IJCAHPO holds your results until it confirms your graduation and, where it applies, your work hours.
Trained elsewhere? If you don't meet a pathway but believe your training or experience is equivalent, you can ask IJCAHPO for special consideration; people trained outside the United States and Canada may qualify this way. Reviews can take several weeks.

How to get COA certified, step by step

Confirm your pathway and gather proof of education, such as a transcript or certificate of completion, plus CE verification if a rule above applies.
Line up a sponsoring ophthalmologist. On IJCAHPO's mail-in application, an ophthalmologist (your employer or another licensed ophthalmologist) signs a sponsor section confirming either that you work under their direct supervision or that they sponsor you.
Apply online or by mail, with the application fee, from IJCAHPO's COA page.
Wait for approval. IJCAHPO's FAQ says applications are processed within four weeks. Approval comes as an emailed confirmation notice with scheduling instructions.
Book your exam with Pearson VUE, the company that delivers IJCAHPO's exams. You have 90 days from your confirmation notice to schedule and take it. Before the 90 days end, you can ask IJCAHPO in writing for a one-time 30-day extension, for a fee. Let the window run out and you lose your application fee and must reapply.
Take the exam at a Pearson VUE test center, or at home through OnVUE, Pearson VUE's online option, where a proctor watches remotely by webcam. Changing your appointment late, or missing it, costs a fee.
Get your results. IJCAHPO's documents describe an unofficial pass or fail when you finish, without your score; IJCAHPO warns that showing it as proof of passing is at your own risk. Official results come by mail within four weeks. Didn't pass? See retesting below.

Start studying before you apply: once IJCAHPO approves you, the 90-day clock is running. See how to prepare.

The COA exam at a glance

Questions: 200, all multiple choice
Time: 180 minutes (3 hours)
Where: a Pearson VUE test center, or at home through OnVUE
Results: an unofficial pass or fail when you finish; official results by mail

The COA exam is one of only two IJCAHPO exams offered through OnVUE, and IJCAHPO must approve you for online testing first. A computer or connection that fails Pearson's checks on exam day can cost you the exam and its fee, so run Pearson's system test on the same computer and network well ahead. OnVUE isn't offered in some countries; Pearson's OnVUE page for IJCAHPO lists them.

An older IJCAHPO exam information sheet says candidates also get some unmarked, unscored trial questions, on top of the scored ones. IJCAHPO's current COA page doesn't say whether its 200 includes them, so treat every question as if it counts.

What's on the COA exam: the 22 content areas

IJCAHPO's current COA outline took effect on August 1, 2025. It splits the exam into 22 content areas, each worth a set share of the questions. They are far from equal: the 6 areas weighted 7% or more make up 46% of the exam, while 6 are 2% each.

Here they are, heaviest first; the COA study guides page lists all 22 guides too. Names may differ slightly from IJCAHPO's wording; the official outline (PDF) has the exact labels.

Content area (links to its free study guide)	Share of exam
History and Documentation	9%
General Medical Knowledge	8%
Ophthalmic Patient Services and Education	8%
Visual Assessment	7%
Pupil Assessment	7%
Tonometry	7%
Pharmacology	6%
Visual Field Testing	6%
Refractometry	5%
Ophthalmic Imaging	5%
Medical Ethics, Legal, and Regulatory Issues	4%
Ocular Motility Testing	4%
Lensometry	3%
Biometry	3%
Supplemental Testing	3%
Surgical Assisting	3%
Keratometry	2%
Diagnostic Ultrasound	2%
Microbiology	2%
Optics and Spectacles	2%
Contact Lenses	2%
Equipment Maintenance and Repair	2%

Some books and websites still follow IJCAHPO's older 19-area outline. If a source lists 19 areas, or weights that don't match this table, check it against the official PDF.

How to prepare for the COA exam

First, a common mix-up: for A3, the JCAT or AAO course is part of qualifying, not exam prep. Each ends with a test you must pass at 80% or higher before you can apply, and passing it doesn't make you certified.

For the exam itself, spend your time where the weight is:

Read the free COA study guides, heaviest areas first.
Try 32 free COA practice questions with answers, from all 22 areas, with explanations.
Take the free 20-question mock test. It picks 20 of those 32 questions, weighted like the real exam, and scores you. One free mock a day.
When you want more, the COA plan is $9.99 a month until you cancel. If you haven't used a free trial, your first 7 days are free, and you aren't charged if you cancel before the trial ends. It adds the full COA question bank, unlimited mock tests and a timed 200-question exam simulation.

Renewing your COA certification (recertification)

IJCAHPO certifications last three years (36 months). To renew COA certification, either earn 18 continuing education (CE) credits within those three years, or pass the COA exam again before your certification is revoked. IJCAHPO's recertification page says which credits count and has current deadlines and fees. CPR isn't required, but a copy of your CPR card can count as one CE credit if you took the course during those three years.

Miss your renewal date and your certification lapses. After a limited late window, IJCAHPO revokes it, and you no longer hold the credential.

COA certification FAQ

How long does it take to get COA certified?

It depends on your pathway. A1 needs no work hours beyond your program, and students can apply up to two months before graduating. A2 adds 500 hours of work, about three months full time. A3 needs an approved course plus 1,000 hours, about six months full time or a year at 20 hours a week. After you apply, allow up to four weeks for approval, 90 days to take the exam and four weeks for official results.

Can I take the COA exam without work experience?

Yes, through COA-A1. Graduates of an ICA-accredited Clinical Assistant program need no work hours. A2 needs 500 hours under an ophthalmologist, and A3 needs 1,000.

Can you take the COA exam online?

Yes, in most countries. Through Pearson VUE's OnVUE you can test at home, if your setup meets Pearson's rules and your country isn't on its restricted list, or you can test at a Pearson VUE test center. Either way, IJCAHPO must approve your application before you book.

How much does the COA exam cost?

This page doesn't quote fees because they change. For current amounts, start from IJCAHPO's COA page and certification FAQ. You pay one fee to apply for the exam and another for each retest. Also:

U.S. and Canadian military personnel and veterans can get up to 50% off the initial exam application fee; contact IJCAHPO for pricing (military personnel page).
If you cancel after approval, IJCAHPO refunds the exam fee minus a processing fee, if you ask in writing before your 90-day window ends.
IJCAHPO's documents also describe a “COA practice examination.” Despite the name, it is a sitting of the real COA exam, not a practice quiz like this site's free questions. You pay a smaller fee up front, and if you pass, a second fee within 30 days of your official results to receive your certificate. Ask IJCAHPO whether it is still offered.

What happens if I don't pass the COA exam?

A retest form comes with your official results. Your retest application and its fee must reach IJCAHPO within 12 months of your first exam date.

What score do you need to pass the COA exam?

IJCAHPO doesn't publish a passing score: its documents describe a pass or fail result, not a numeric score. Figures on other websites, such as a passing score of 72, do not come from IJCAHPO.

What is the difference between COA, COT and COMT certification?

They are IJCAHPO's three core certifications, from entry level up: Certified Ophthalmic Assistant, Certified Ophthalmic Technician and Certified Ophthalmic Medical Technologist. Moving up from COA to COT, or from COT to COMT, takes more supervised work, and the higher levels add skills tests to the multiple-choice exam. IJCAHPO's COT page lists the routes to COT certification, including two for people who hold COA certification. Our guide to how to get COT certified walks through all four. EyeTech Prep has COT exam prep too.

Do you need to be certified to work as an ophthalmic assistant?

Often the employer decides. Many ophthalmic assistant job listings ask for current COA certification, and some hire uncertified assistants who agree to earn it within a set time.

Official sources

IJCAHPO can change its rules at any time; these pages have the current versions:

Ready to see where you stand?

Try the free COA practice questions, then take a free 20-question mock test weighted like the exam.

Free COA practice questions →Free COA study guides