Certified Paraoptometric (CPO) Practice Exam 2026 - Free Paraoptometric Practice Questions and Study Guide

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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

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.

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As a flexible lens material

As a standard glass lens

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