Certified Paraoptometric (CPO) Practice Exam 2025

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Gear up for the Certified Paraoptometric (CPO) Exam 2025. Study with interactive quizzes and multiple-choice questions with comprehensive explanations. Excel in your exam with our tailored preparation tools!

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Which material is known for its shatter-resistant properties in eyewear?

Plastic
Polycarbonate
Glass
Acrylic

The correct answer is: Polycarbonate

Polycarbonate is particularly recognized for its shatter-resistant properties, making it an ideal choice for eyewear, especially in environments where impact resistance is critical. This material is notable for its high strength-to-weight ratio, allowing it to be both lightweight and durable. Polycarbonate lenses can withstand significant force without breaking or shattering, providing better safety for the wearer compared to other materials like glass, which, while optically clear, can shatter upon impact. Plastic lenses can be more prone to scratching and may not offer the same level of impact resistance as polycarbonate. Acrylic, while lighter and shatter-resistant to some extent, is not as durable as polycarbonate in terms of overall impact resistance. Therefore, polycarbonate stands out as the premier choice for safety eyewear.