1. Clinical Principles, Testing, and Procedures
52.2% of the examIdentify weak areas and improve with focused review.
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Free CPO Practice Test
Pass the Certified Paraoptometric exam with confidence.
Start with a free CPO practice test and build exam-ready confidence for the Certified Paraoptometric exam.
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1000+CPO Questions
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Everything your CPO certification prep needs
Practice expert-vetted questions, find your weak domains, and turn every mistake into a focused review plan.
Expert-vetted questions
Every question is reviewed by an experienced CPO professional for clarity, accuracy and practical exam relevance.
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Practice the CPO exam by domain
2. Ophthalmic Optics and Dispensing
11.1% of the examIdentify weak areas and improve with focused review.
Start Practicing3. Contact Lenses
14.5% of the examIdentify weak areas and improve with focused review.
Start Practicing4. Professional Issues
11.1% of the examIdentify weak areas and improve with focused review.
Start Practicing5. Science of the Eye
11.1% of the examIdentify weak areas and improve with focused review.
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Frequently asked questions
Straight answers about the CPO exam, the questions, pricing, the free trial, and how this fits your prep.
The CPO exam spans 5 domains - Clinical Principles, Testing, and Procedures (52.2%), Ophthalmic Optics and Dispensing (11.1%), Contact Lenses (14.5%), Professional Issues (11.1%), and Science of the Eye (11.1%). Every practice question maps to one of them, so you train on exactly what's tested.
No - and that matters. These are original practice questions written to mirror the style, difficulty, and domain coverage of the CPO exam blueprint. We never distribute actual exam content, so practicing here keeps you fully compliant with official exam policies.
No. CPO Exam Prep is an independent study resource for Certified Paraoptometric (CPO). It is not affiliated with, sponsored by, or endorsed by the official certifying body or exam administrator.
Every paid plan unlocks the full bank of 1,000+ practice questions covering all 5 CPO domains - Clinical Principles, Testing, and Procedures (52.2%), Ophthalmic Optics and Dispensing (11.1%), Contact Lenses (14.5%), Professional Issues (11.1%), and Science of the Eye (11.1%). You can practice the whole bank, filter by domain, or run a timed, domain-balanced exam simulation.
Yes - the bank is maintained against the current exam outline, and questions are revised when the exam changes.
No honest practice platform can guarantee a pass. What realistic practice does is show you - before exam day - exactly which domains are weak, and give you the repetitions to fix them. That's the difference between hoping you're ready and knowing where you stand.
Yes. You get 10 free sample questions with instant feedback - no credit card and no account required.
The free sample shows you the question quality. Paid plans unlock the full 1,000+ question bank, exam-style practice modes, mistake review, and - on Fast Track and Pass Confidence - progress analytics that show your readiness by domain.
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.
Match it to your exam date: Final Review (2 days) for an exam in the next day or two, Fast Track (7 days) for an exam this week, Pass Confidence (6 weeks) for a structured run-up.
For most countries, the price you see is exactly what you pay - tax is already included. Where local law requires it to be added separately, it's shown clearly at checkout before you pay, so there are never any surprise fees.
Access is instant after payment and runs for your plan's full window from that moment. When the window ends, your local progress stays on your device - you can buy another window any time and pick up where you left off.
Yes - the whole platform is mobile-first: practice, mistake review, and analytics all work on any phone, tablet, or laptop with a browser. Nothing to install.
Every answer feeds your per-domain accuracy, readiness score, and weak-area list. Instead of re-reading everything, you drill the domains that are actually costing you points - that's what moves a score in days, not months.
Chat with us any time - the 24/7 support chat in the corner of every page gives instant answers about plans, access, and billing. Prefer email? The contact link is in the footer. Payments are processed securely by Polar, and active customers can download an invoice from their profile page.
Make sure you're signed in with the same email you used at checkout - access activates within a minute of payment. If it still doesn't appear, email us from the contact link in the footer and it'll be sorted out.
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Drill a single domain, run a mixed session, or sit a full timed exam simulation - pick the mode that fits your study window.
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Focus on one CPO domain at a time - pick it here, then choose a mode.
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Flip, grade yourself, and repeat the tough ones until they stick.
Train with flashcards →Review Mistakes
Re-drill the questions you got wrong.
Review now →Review Weak Domains
Drill your lowest-scoring domains first.
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A focused 48-hour cram for candidates sitting the exam in the next day or two.
- Full 1,000+ question bank
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For candidates with 2-6 weeks before exam day - the complete, confident way to prepare.
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Trusted by CPO candidates
Real feedback from CPO candidates on Reddit.
"wasnt confident about the ophthalmic optics stuff at all. the practice questions on cpoquiz.com actually helped me figure out where my gaps were instead of just guessing what to study. passed first try, honestly relieved its over."
"i put off studying for like three weeks and then panicked. found this site, drilled practice questions every night for about a week straight. the contact lens section always tripped me up and seeing which ones i kept getting wrong made it easier to focus. not a magic fix but it worked for me."
"did maybe five days of review using it. the clinical procedures questions are alot of the exam and this covered that well. passed. thats really all i have to say."