IJCAHPO Certified Ophthalmic Assistant
COA
coaexam.com is your dedicated COA practice site: 1,100+ exam-style practice questions, organized across all 22 exam domains. Start with the free practice test — no card required.
- practice questions
- 1,100+
- exam domains
- 22
- practice test
- Free
What’s on the COA exam
- 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%)
- Ocular Motility Testing (4%)
Official exam blueprint domains — your practice bank mirrors this outline.
The COA question bank follows the official exam blueprint across 22 domains, so your practice mirrors the real outline — and shows you exactly where you’re weak. See the full blueprint on coaexam.com →
Your COA prep is one click away
The free COA practice test, the full 1,100+ question bank and your readiness score — all on coaexam.com.
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