Certified Paraoptometric Prep
The AOA's entry-level paraoptometric certification for optometric practice staff.
100 scored + 20 pretest questions, 90 minutes — administered by the AOA's Commission on Paraoptometric Certification at Prometric centers or via ProProctor remote testing.
New to the exam? See how to get CPO certified: who can take it, how to apply, and how to renew.
Try 36 free CPO practice questions with answers, from every content area.
Study Materials
Guides for all 5 CPO exam domains
Mock Tests
CPO-level practice exams
Practice by Domain
Target one exam content area at a time
Official Exam Content Areas
Clinical Principles, Testing, and Procedures
Chart preparation, case history, visual acuity, and the clinical tests and procedures the paraoptometric performs.
Ophthalmic Optics and Dispensing
Basic optics, lens types and materials, frame selection and adjustment, and dispensing procedures.
Contact Lenses
Lens types, insertion, removal, and care regimens, and recognizing wear problems to refer.
Professional Issues
Office operations, patient communication, HIPAA and confidentiality, safety, and professional conduct.
Science of the Eye
Basic eye anatomy and how the eye works, common eye conditions, and the words used for clinical findings.