Certified Paraoptometric (CPO) Practice Exam 2025

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What is the ability of the eyes to focus objects from distance to near called?

Accommodation
Refraction
Convergence
Persuasion

The correct answer is: Accommodation

The ability of the eyes to focus on objects at varying distances, from far away to nearby, is known as accommodation. This process involves the eye's lens changing shape, which allows it to adjust its focal point. When you look at something far off, the lens becomes flatter, and when focusing on something closer, it becomes more rounded. This dynamic adjustment ensures that images are sharply focused on the retina, enabling clear vision at multiple distances. Refraction refers to the bending of light as it passes through different mediums and is not specifically about the eye's ability to focus. Convergence involves the inward movement of the eyes towards each other to maintain a single binocular vision when focusing on a close object. Persuasion is unrelated to optical functions and pertains to influencing others in their thoughts or actions. Thus, accommodation is the correct term for the focusing ability of the eyes, confirming the accuracy of your answer.