How many questions are on the CPO exam?

The Certified Paraoptometric (CPO) exam consists of 200 multiple-choice questions. Candidates are given three hours to complete the test. The questions are drawn from the core competency areas defined by the American Optometric Association (AOA) Commission on Paraoptometric Certification, covering clinical and administrative duties performed in optometric practice.

What is the format of the CPO certification exam?

The CPO exam is a computer-based, multiple-choice test administered at Prometric testing centers across the United States. Each question has four answer options with one correct response. The exam is closed-book, and no reference materials or electronic devices are permitted during the testing session. Results are typically available within four to six weeks.

What are the eligibility requirements for the CPO exam?

To sit for the CPO exam, candidates must have a high school diploma or equivalent and at least six months of work experience in an optometric setting. Alternatively, graduates of a paraoptometric education program approved by the AOA may qualify without the work experience requirement. There is no mandatory prerequisite coursework beyond these baseline criteria.

How do I register for the CPO exam?

Registration for the CPO exam is handled through the American Optometric Association Commission on Paraoptometric Certification. Candidates submit an application online at the AOA website, pay the applicable exam fee, and then schedule their testing appointment through Prometric. The exam is offered during designated testing windows throughout the year, so early registration is recommended.

What study materials are recommended for CPO exam preparation?

The AOA recommends the Paraoptometric Resource Manual as the primary study guide for CPO candidates. Additional preparation resources include the AOA online study modules, flashcard sets covering optics and ocular anatomy, and practice exams that mirror the actual test format. Reviewing clinical procedures you perform daily in practice also reinforces key concepts tested on the exam.

How is the CPO exam scored?

The CPO exam uses a scaled scoring method based on the number of correct answers. There is no penalty for guessing, so candidates should answer every question. The minimum passing score is determined through a criterion-referenced standard-setting process, meaning it reflects the level of knowledge required for competent entry-level paraoptometric practice rather than a fixed percentage.

What is the difference between CPO and CPOA certification?

The CPO (Certified Paraoptometric) is the entry-level credential for ophthalmic support staff, while the CPOA (Certified Paraoptometric Assistant) is an advanced certification requiring additional clinical knowledge. The CPOA exam covers more complex topics including advanced ocular disease, diagnostic testing procedures, and contact lens management. Candidates must hold a current CPO before pursuing the CPOA designation.

Can I retake the CPO exam if I do not pass?

Yes, candidates who do not pass the CPO exam may retake it during a subsequent testing window. There is no limit on the number of attempts, but you must submit a new application and pay the full exam fee for each retake. The AOA recommends waiting at least 90 days between attempts to allow adequate time for additional study and preparation.

CPO (Certified Paraoptometric) Test: Study Tips & Guide 2026 July

Get ready for your CPO (Certified Paraoptometric) certification. Practice questions with step-by-step answer explanations and instant scoring. 🏆

CPO - Certified Paraoptometric By Dr. Susan ParkJul 1, 202654 min read

CPO (Certified Paraoptometric) Test: Study Tips & Guide 2026 July

⏱️2 HoursTime Limit

📝100Questions

✅70%Pass Rate

💵$285Exam Fee

The Certified Paraoptometric (CPO) exam is the foundational certification for allied health professionals in optometry. Passing this exam demonstrates your competence in front-office procedures, pre-testing, and contact lens instruction, setting the stage for future advancement to Certified Paraoptometric Technician (CPOT).

If you are beginning your career in optometric support, start with our CPOA practice test to build a strong foundation in basic ophthalmic procedures and patient care.

CPO (Certified Paraoptometric) Test: Study Tips & Guide - Certified Paraoptometric preparation guide

CPO Practice Test Questions

Prepare for the CPO - Certified Paraoptometric exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.

CPO Basic Science

CPO Exam Questions covering Basic Science. Master CPO Test concepts for certification prep.

CPO Clinical Principles and Procedures

Free CPO Practice Test featuring Clinical Principles and Procedures. Improve your CPO Exam score with mock test prep.

CPO Basic Science

CPO Mock Exam on CPO Basic Science. CPO Study Guide questions to pass on your first try.

CPO Clinical Principles and Procedures

CPO Test Prep for CPO Clinical Principles and Procedures. Practice CPO Quiz questions and boost your score.

CPO Ophthalmic Optics and Dispensing

CPO Questions and Answers on CPO Ophthalmic Optics and Dispensing. Free CPO practice for exam readiness.

CPO Professional Issues

CPO Mock Test covering CPO Professional Issues. Online CPO Test practice with instant feedback.

CPO FREE CPO Common Ocular Diseases and Pa...

Free CPO Quiz on FREE CPO Common Ocular Diseases and Pathologies Questions and Answers. CPO Exam prep questions with detailed explanations.

CPO FREE CPO Contact Lens Patient Instruct...

CPO Practice Questions for FREE CPO Contact Lens Patient Instruction Questions and Answers. Build confidence for your CPO certification exam.

CPO FREE CPO Keratometry and Corneal Topog...

CPO Test Online for FREE CPO Keratometry and Corneal Topography Questions and Answers. Free practice with instant results and feedback.

CPO FREE CPO Ocular Emergencies and Triage...

CPO Study Material on FREE CPO Ocular Emergencies and Triage Questions and Answers. Prepare effectively with real exam-style questions.

CPO FREE CPO Ocular Pharmacology and Medic...

Free CPO Test covering FREE CPO Ocular Pharmacology and Medication Instillation Questions and Answers. Practice and track your CPO exam readiness.

CPO FREE CPO Ophthalmic Instrument Mainten...

CPO Exam Questions covering FREE CPO Ophthalmic Instrument Maintenance and Calibration Questions and Answers. Master CPO Test concepts for certification prep.

CPO FREE CPO Tonometry Principles and Proc...

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CPO FREE CPO Visual Field Testing (Perimet...

CPO Mock Exam on FREE CPO Visual Field Testing (Perimetry) Questions and Answers. CPO Study Guide questions to pass on your first try.

CPO Lensometry and Spectacle Lens Verifica...

CPO Test Prep for Lensometry and Spectacle Lens Verification. Practice CPO Quiz questions and boost your score.

CPO Ophthalmic Optics and Dispensing

CPO Questions and Answers on Ophthalmic Optics and Dispensing. Free CPO practice for exam readiness.

CPO Professional Issues

CPO Mock Test covering Professional Issues. Online CPO Test practice with instant feedback.

CPO Common Ocular Diseases and Pathologies

Free CPO Quiz on Common Ocular Diseases and Pathologies. CPO Exam prep questions with detailed explanations.

CPO Contact Lens Patient Instruction

CPO Practice Questions for Contact Lens Patient Instruction. Build confidence for your CPO certification exam.

CPO Keratometry and Corneal Topography

CPO Test Online for Keratometry and Corneal Topography. Free practice with instant results and feedback.

CPO Ocular Emergencies and Triage

CPO Study Material on Ocular Emergencies and Triage. Prepare effectively with real exam-style questions.

CPO Ocular Pharmacology and Medication Ins...

Free CPO Test covering Ocular Pharmacology and Medication Instillation. Practice and track your CPO exam readiness.

CPO Ophthalmic Instrument Maintenance and ...

CPO Exam Questions covering Ophthalmic Instrument Maintenance and Calibration. Master CPO Test concepts for certification prep.

CPO Tonometry Principles and Procedures

Free CPO Practice Test featuring Tonometry Principles and Procedures. Improve your CPO Exam score with mock test prep.

CPO Visual Field Testing (Perimetry)

CPO Mock Exam on Visual Field Testing (Perimetry). CPO Study Guide questions to pass on your first try.

FREE CPO PRACTICE TEST

CPO Exam Flashcards

Quick review for the Certified Paraoptometric exam

👁️What is Myopia?

Myopia, or nearsightedness, is a refractive error where light focuses in front of the retina, causing distant objects to appear blurry.

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👓What does PD stand for?

PD stands for Pupillary Distance, which is the measurement between the centers of the pupils used for fitting glasses.

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🩺What is Triage?

Triage is the process of determining the urgency of patients' conditions to prioritize treatment based on severity.

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💊What is a Mydriatic drug?

A Mydriatic drug is a pharmaceutical agent used to dilate the pupil, often used during comprehensive eye exams.

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📝What is HIPAA?

HIPAA is the Health Insurance Portability and Accountability Act, protecting patient health information privacy and security.

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📏What is Visual Acuity?

Visual Acuity is a measure of the clarity or sharpness of vision, typically tested using a Snellen chart at 20 feet.

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CPO EXAM QUESTIONS QUIZ

CPO Exam Study Guide

The CPO exam covers a wide range of topics essential for paraoptometrics. Our AOA Paraoptometric guide breaks down the key areas you need to master for Paraoptometric certification.

What is the CPO exam?	The CPO exam is a certification test administered by the Commission on Paraoptometric Certification (CPC) that validates a person's knowledge in the field of optometric assistance.
Who is eligible for the CPO exam?	To take the Certified Paraoptometric exam, you must have a high school diploma (or equivalent) and at least 6 months of employment in the eye care field.
What does the CPO test cover?	The CPO test covers Basic Science, Clinical Principles and Procedures, Ophthalmic Optics and Dispensing, and Professional Issues.
Is the CPO exam hard?	The CPO exam is challenging but manageable with proper preparation. Using a CPO study guide and taking practice tests significantly improves your chances of passing.

What is the CPO exam?

The CPO exam is a certification test administered by the Commission on Paraoptometric Certification (CPC) that validates a person's knowledge in the field of optometric assistance.

Who is eligible for the CPO exam?

To take the Certified Paraoptometric exam, you must have a high school diploma (or equivalent) and at least 6 months of employment in the eye care field.

What does the CPO test cover?

The CPO test covers Basic Science, Clinical Principles and Procedures, Ophthalmic Optics and Dispensing, and Professional Issues.

Is the CPO exam hard?

The CPO exam is challenging but manageable with proper preparation. Using a CPO study guide and taking practice tests significantly improves your chances of passing.

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CPO Score Calculator

Total Scored Questions

150

How many questions did you answer correctly?

0105150

105 out of 150 correct

70%

Required to Pass: ~70% (Estimated)

Your Score: 105 correct✓PASS

Many optometry practices will pay for your CPO exam fees and study materials. Ask your employer about reimbursement options!

CPO (Certified Paraoptometric) Test: Study Tips & Guide - Certified Paraoptometric exam preparation

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CPO CERTIFICATION PRACTICE TEST

CPO Test Day Checklist

✓Valid Government ID
✓Testing Confirmation Email
✓Arrive 30 Mins Early
✓Review CPO Study Guide
✓Leave Personal Items
✓Get Good Sleep
✓Eat Healthy Breakfast
✓Plan Route to Center

📄Free CPO Practice Test PDF

Ready to Pass the CPO Exam?

Join thousands of successful Paraoptometrics. Start practicing today with our free CPO exam questions and comprehensive resources.

CPO Renewal Requirements

📅

Renewal Cycle

3 Years

🎓

CE Credits

18 Hours

💵

Fee

$95

Submit your renewal application and CE credits to the CPC before the November 1st deadline of your renewal year to avoid late fees.

✅Pros

+Validates your knowledge and skills objectively
+Increases job market competitiveness
+Provides structured learning goals
+Networking opportunities with other certified professionals

❌Cons

−Study materials can be expensive
−Exam anxiety can affect performance
−Requires dedicated preparation time
−Retake fees apply if you don't pass

CPO Questions and Answers

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Certified Paraoptometric Practice Test PDF (Free Printable 2

About the Author

Dr. Susan ParkOD, PhD Visual Science

Optometrist & Vision Care Licensing Exam Expert

UC Berkeley School of Optometry

Dr. Susan Park is a Doctor of Optometry with a PhD in Visual Science from UC Berkeley School of Optometry. She has 15 years of clinical optometry practice and academic instruction experience and specializes in preparing optometry graduates for the NBEO Part I, II, and III board examinations, as well as opticianry licensing and vision therapy certification programs.

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