Certified Paraoptometric Practice Test

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Prepare for the Certified Paraoptometric Test! Study using flashcards, multiple choice questions, and detailed explanations. Get ready for your exam and boost your optometric skills!

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What is the unit of measure for ophthalmic lenses?

  1. diopter

  2. Convex (+)

  3. Pl-cylinder

  4. spherical

The correct answer is: diopter

Ophthalmic lenses are used to correct vision problems related to near-sightedness, far-sightedness, and astigmatism. The unit of measure for these lenses is diopter (A), which indicates the refractive power of the lens. A higher diopter value means a stronger lens, and a lower diopter value means a weaker lens. The other options, convex (+), Pl-cylinder, and spherical, refer to the shape or type of lens and are not the unit of measure for ophthalmic lenses. Therefore, they are not correct answers.

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