COA® practice test

Sample questions — under expert review

These are original practice questions written for optical.education. They are still being reviewed by a credentialed expert, so treat them as study prompts, not as official exam content. Spotted a problem? Tell us.

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COA® sample practice quiz

One question at a time, with an explanation that teaches the concept behind each answer. Topics covered: Visual Assessment, Pupil Assessment, Tonometry, Keratometry, Lensometry, History & Documentation, Pharmacology, Microbiology, Visual Field Testing, Ocular Motility Testing, Optics & Spectacles, Biometry, Medical Ethics, Legal & Regulatory.

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See if you're right and read the explanation after every question. Quiz mode
Answer everything first, then review explanations at the end.

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Topic	Correct

New to this exam? Read the COA certification guide for the official format, fees, and content areas, or browse our study guides.

Independent study resource

Not affiliated with or endorsed by ABO-NCLE, IJCAHPO, or any state board. Not medical advice. Practice questions are original and don't guarantee a passing score. Verify current requirements with the official source. Read the full disclaimer.