CPO Domain 1: Clinical Principles, Testing, and Procedures (52.2%) - Complete Study Guide 2027
Domain 1: Clinical Principles, Testing, and Procedures represents the largest portion of the CPO exam, accounting for 52.2% of all questions.
CPO Domain Deep Dives
Domain Deep Dives for the Certified Paraoptometric (CPO) exam - 5 in-depth guides to help you prepare with confidence. Browse all study resources or jump straight into a guide below.
CPO Domain 2: Ophthalmic Optics and Dispensing (11.1%) - Complete Study Guide 2027
Domain 2 of the CPO exam focuses on Ophthalmic Optics and Dispensing, representing 11.1% of the total examination content.
CPO Domain 3: Contact Lenses (14.5%) - Complete Study Guide 2027
Domain 3 of the Certified Paraoptometric (CPO) examination focuses exclusively on contact lenses, representing 14.5% of the total exam content.
CPO Domain 4: Professional Issues (11.1%) - Complete Study Guide 2027
Domain 4: Professional Issues represents 11.1% of the CPO exam, making it one of the five equally weighted domains alongside ophthalmic optics and...
CPO Domain 5: Science of the Eye (11.1%) - Complete Study Guide 2027
Domain 5: Science of the Eye represents 11.1% of the CPO exam, making it one of the five equally weighted domains alongside ophthalmic optics and...
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