Certified Paraoptometric (CPO) Practice Exam 2025

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Prepare for the Certified Paraoptometric Exam with our comprehensive quiz featuring multiple-choice questions. Each question is accompanied by hints and explanations, helping you build your knowledge and confidence. Get ready to excel in your career!

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What do you call the additional curves that surround the optical zone of a lens?

Fringe Curves
Peripheral Curves
Boundary Curves
Outer Curves

The correct answer is: Peripheral Curves

The term that describes the additional curves surrounding the optical zone of a lens is "Peripheral Curves." These curves are crucial in providing a smooth transition from the central optical zone to the edge of the lens, enhancing the overall comfort and fitting of the lens on the wearer's face. They help to reduce optical distortions and improve the aesthetics of the lens. Understanding the role of peripheral curves is important for ensuring proper lens performance and wearer satisfaction.