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!

Practice this question and more.

What is the name of the location of the cylinder within the lens?

Vertex
Frame
Pupil
Axis

The correct answer is: Axis

The axis refers to the vertical alignment of the lens within the frame, whereas the other options do not specifically refer to the location of the cylinder within the lens. The vertex is the point at which the lens surface is intersected by the optical axis, the frame is the overall structure that holds the lens, and the pupil is the opening in the center of the iris that regulates the amount of light entering the eye. Therefore, axis is the most appropriate and specific term to describe the location of the cylinder within the lens.