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This is the complete topic index for the CPO and CPOA paraoptometric certification exams. The CPO (Certified Paraoptometric) is the entry-level credential: 100 multiple-choice questions in 90 minutes covering optics, clinical testing, anatomy, patient communication, and office management. The CPOA (Certified Paraoptometric Assistant) builds on that foundation with a 250-question exam that digs deeper into pharmacology, advanced instrumentation, ocular disease, and contact lens procedures.
Most of the topics below apply to both exams, while a few categories -- such as office management -- are weighted more heavily toward the CPO. Each article is written specifically for paraoptometric candidates and focuses on the clinical knowledge and vocabulary that appears on the actual exams. Work through these in any order, or jump straight to the categories you find most challenging.
Core optical concepts every paraoptometric needs to understand prescriptions, lenses, and how light behaves in the eye.
How to measure and record visual acuity, screen for color and depth perception, and perform basic field tests.
The clinical instruments you will operate, maintain, and be tested on for both CPO and CPOA exams.
Understand the structures of the eye, how vision works, and the anatomy concepts tested on paraoptometric exams.
The common refractive errors and binocular vision conditions you need to recognize and explain to patients.
Ocular diseases and systemic conditions affecting the eye that every paraoptometric should understand.
Contact lens types, fitting basics, patient instruction, care systems, and complications to watch for.
Ophthalmic medications, drop instillation technique, and the clinical procedures paraoptometrics assist with.
Essential soft skills, patient intake procedures, triage, HIPAA compliance, and infection control.
Scheduling, insurance, billing, coding, and compliance topics heavily weighted on the CPO exam.
Detailed breakdowns of each exam content outline and strategies for leveling up from CPO to CPOA.
Format, eligibility, cost, and testing windows
Requirements, content domains, and preparation tips
Side-by-side comparison of both certifications
From entry-level to advanced certification
Practice questions and study tools for the CPO
Practice questions and study tools for the CPOA
Opterio gives you exam-style practice questions, detailed explanations, and spaced repetition so you walk into your CPO or CPOA exam confident and prepared.