Certified Paraoptometric Assistant Prep
The AOA's second-level paraoptometric certification — for CPOs ready to move up.
180 scored + 20 pretest questions, 2 hours 15 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 CPOA certified: who can take it, how to apply, and how to renew.
Try 30 free CPOA practice questions with answers, from every content area.
Study Materials
Guides for all 5 CPOA exam domains
Mock Tests
CPOA-level practice exams
Practice by Domain
Target one exam content area at a time
Official Exam Content Areas
Clinical Principles, Testing, and Procedures
The clinical core at assistant depth — case history, acuity and ancillary testing, pretesting workups, and in-office procedures.
Ophthalmic Optics and Dispensing
Ophthalmic optics, lens forms and treatments, frame fitting and adjustment, and troubleshooting dispensed eyewear.
Contact Lenses
Lens materials and designs, fitting support, care systems, and complication red flags at assistant depth.
Professional Issues
Infection control, phone triage, confidentiality and HIPAA, office operations, and professional conduct.
Science of the Eye
Ocular anatomy and physiology, common ocular conditions and diseases, and the vocabulary of clinical findings.