Certified Paraoptometric (CPO) Practice Exam 2025 - Free Paraoptometric Practice Questions and Study Guide

Question: 1 / 420

In terms of lens wear, what is the main function of plus lenses?

To reduce glare from sunlight

To correct hyperopia (farsightedness)

The primary function of plus lenses is to correct hyperopia, also known as farsightedness. When a person is hyperopic, their eyes cannot focus on nearby objects clearly, which occurs because the light entering the eye is focused behind the retina. Plus lenses, which are convex in shape, bend light rays inward towards the retina, allowing for clearer vision of close objects. This correction enables individuals with hyperopia to see better at near distances, effectively addressing the difficulties they experience due to their condition. The other options pertain to functions that do not specifically relate to hyperopia correction.

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To provide a flat visual plane

To enhance peripheral vision

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