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 is Trivex used for in optics?

As a high-index lens material
As a safety lens material that is thin and clear
As a flexible lens material
As a standard glass lens

The correct answer is: As a safety lens material that is thin and clear

Trivex is known for its properties that make it an excellent choice as a safety lens material. It is lightweight, provides high impact resistance, and offers optical clarity, making it suitable for applications where safety is a concern. This material is particularly popular in eyewear for children and in sports eyewear, as it provides protection while being thin and clear. Trivex is also UV protective, which adds to its safety profile, ensuring that the eyes are shielded from harmful ultraviolet radiation. The focus on safety and lightweight comfort is what distinguishes Trivex from other materials used in optics. While it shares some characteristics with high-index materials, its primary distinction lies in its safety and impact-resistant features rather than just its thickness or the refractive index.