True or False: Photochromic lenses are only available in glass.

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the Certified Paraoptometric Assistant (CPOA) Exam. Study with extensive flashcards and multiple choice questions with explanations. Enhance your skills and knowledge to succeed.

Multiple Choice

True or False: Photochromic lenses are only available in glass.

Explanation:
Photochromic lenses don’t depend on glass alone—the dye or coating that darkens with UV light can be incorporated into different lens materials. You’ll find photochromic options in plastic lenses such as CR-39, polycarbonate, and high-index plastics as well as in glass. Plastic lenses are now far more common for photochromics because they are lighter, safer, and easier to tint consistently. So the statement that photochromic lenses are only available in glass is false.

Photochromic lenses don’t depend on glass alone—the dye or coating that darkens with UV light can be incorporated into different lens materials. You’ll find photochromic options in plastic lenses such as CR-39, polycarbonate, and high-index plastics as well as in glass. Plastic lenses are now far more common for photochromics because they are lighter, safer, and easier to tint consistently. So the statement that photochromic lenses are only available in glass is false.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy