Which structure holds the lens in position and allows it to change shape during accommodation?

Study for the Visual Impairment Education Certification Test. Explore multiple choice questions, with hints and explanations for each. Prepare thoroughly!

Multiple Choice

Which structure holds the lens in position and allows it to change shape during accommodation?

Explanation:
Suspensory ligaments anchor the lens to the ciliary body and transmit the tension that shapes the lens during accommodation. When the ciliary muscle contracts, tension on these ligaments relaxes, allowing the lens to become more rounded for near vision. When the muscle relaxes, tension increases and the lens flattens for distant vision. The iris controls pupil size and isn’t involved in holding or reshaping the lens, and while the lens changes shape, it relies on the suspensory ligaments to stay in place and transmit the necessary tension.

Suspensory ligaments anchor the lens to the ciliary body and transmit the tension that shapes the lens during accommodation. When the ciliary muscle contracts, tension on these ligaments relaxes, allowing the lens to become more rounded for near vision. When the muscle relaxes, tension increases and the lens flattens for distant vision. The iris controls pupil size and isn’t involved in holding or reshaping the lens, and while the lens changes shape, it relies on the suspensory ligaments to stay in place and transmit the necessary tension.

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