Visual Optics Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

How does the lens of the eye adjust for viewing objects at different distances?

By changing its color based on distance

By adjusting its curvature through accommodation

The lens of the eye adjusts for viewing objects at different distances primarily through a process known as accommodation. When viewing distant objects, the ciliary muscles relax, causing the lens to become flatter. In contrast, when focusing on nearby objects, the ciliary muscles contract, allowing the lens to become more rounded due to its elastic properties. This change in curvature increases the lens's refractive power, allowing the eye to focus light properly onto the retina for clear vision at various distances. Understanding this mechanism is crucial for comprehending how the eye adapts to different visual tasks and maintains clarity in vision.

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By increasing the amount of light entering the eye

By expanding size to enhance vision

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