Pass the COA certification exam with confidence
Start with a free COA practice test, then build exam-ready confidence with 1,000+ realistic questions across all 22 exam domains, detailed explanations, and analytics that show exactly when you're ready.
Everything your COA certification prep needs
Practice exam-style judgment
See what to study next
Turn mistakes into confidence
Your exam readiness
Track your readiness, domain strengths, and recent results at a glance.
Your exam readiness
Recommended study plan
Your progress at a glance
How each plan builds your readiness
Questions show what you answered. Analytics shows what to fix, where to focus, and whether you're actually ready.
Raw exposure for a quick, last-minute rush.
Analytics turns practice into a focused plan.
The full window to build real readiness.
Frequently asked questions
Straight answers about what's included, how access works, and how this fits your COA prep.
How many COA practice questions are included?
Every paid plan unlocks the full bank of 1,000+ practice questions covering all 22 COA domains - History and Documentation (9%), Visual Assessment (7%), Visual Field Testing (6%), Pupil Assessment (7%), Tonometry (7%), Keratometry (2%), Lensometry (3%), Biometry (3%), Diagnostic Ultrasound (2%), Supplemental Testing (3%), Microbiology (2%), Pharmacology (6%), Surgical Assisting (3%), Ophthalmic Patient Services and Education (8%), Optics and Spectacles (2%), Contact Lenses (2%), Equipment Maintenance and Repair (2%), Medical Ethics, Legal, and Regulatory Issues (4%), General Medical Knowledge (8%), Refraction (5%), Ophthalmic Imaging (5%), and Ocular Motility Testing (4%). You can practice the whole bank, filter by domain, or run a timed, domain-balanced exam simulation.
Is this a subscription?
No. Every plan is a single one-time payment for a fixed access window - 48 hours, 7 days, or 6 weeks. There is no auto-renewal and no recurring billing.
Can I try it before paying?
Yes. You get 10 free sample questions with instant feedback - no credit card and no account required.
Are these real COA exam questions?
No - and that matters. These are original practice questions written to mirror the style, difficulty, and domain coverage of the COA exam blueprint. We never distribute actual exam content, so practicing here keeps you fully compliant with official exam policies.
Is this site affiliated with the official certifying body?
No. COA Exam Prep is an independent study resource for IJCAHPO Certified Ophthalmic Assistant (COA). It is not affiliated with, sponsored by, or endorsed by the official certifying body or exam administrator.
What if I need help or have a billing question?
Email us any time. The contact link is in the footer. Payments are processed securely by Polar, and active customers can download an invoice from their profile page.
Your COA certification is closer than you think
Start practicing free today, then unlock the full bank when you're ready to commit to passing.
Choose your COA practice test mode
Target a specific domain, run a mixed session, or use a quick quiz when you only have a short study window.
All Questions
Multiple Choice Only
True/False Only
Quick 50
Exam Simulation
Quiz Complete!
Review your performance and keep improving
Questions to Review
Review Your Mistakes
Domain Performance Analysis
All Mistakes
Pick the prep window that matches your exam date
Every plan unlocks the full COA question bank and exam-style practice. Fast Track and Pass Confidence add progress analytics, longer access, and priority support. One payment, instant access - no subscription. The exam itself costs hundreds of dollars to sit - and a retake costs the same. Every plan here is a fraction of that.
- Full 1,000+ question bank
- All 22 COA domains
- Multiple-choice & true/false practice
- Review mistakes and weak areas - not included
- Progress & accuracy analytics - not included
- Ensure success with analytics & mistake review
- Everything in Final Review
- Progress & accuracy tracking
- Domain weakness analysis
- Quiz history & trends
- Ensure success with analytics & mistake review
- Everything in Fast Track
- 6 full weeks of access
- Exam-readiness scoring
- Priority Support
Profile and invoices
Keep billing details ready for receipts and confirm the access tied to your COA prep account.
Invoice details are generated from your saved profile and current access plan.
Your exam date helps pace your prep. It is saved to your account and visible only to you.
Your COA Prep Progress
Track your mastery across all COA domains
Trusted by COA candidates
Feedback from people who used this platform to get exam-ready.
"I was nervous about the COA exam until I found this platform. The practice questions mirror the real exam style, and after five weeks of consistent prep, I passed on my first attempt with confidence."
"The analytics dashboard was a turning point for my COA prep. It showed I was weakest in History and Documentation (9%) and Visual Assessment (7%), so I spent my final two weeks targeting those areas. Smart studying beats more studying every time."
"Between work and family, I had limited study time for my COA exam. The structured plan kept me on track with focused 30-minute sessions, and the mistake review feature made sure I never repeated the same errors. Passed comfortably."