Which term refers to the eye's ability to change its refractive power for different distances?

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Multiple Choice

Which term refers to the eye's ability to change its refractive power for different distances?

Accommodation is the eye’s ability to adjust focus for objects at different distances by changing the lens’s refractive power. When you look at something up close, the ciliary muscle contracts, the zonular fibers relax, and the lens becomes thicker and more curved, increasing its refractive power to bring the near image into focus on the retina. For distant objects, the ciliary muscle relaxes, the zonules tighten, and the lens flattens, reducing its refractive power so the far image is sharp on the retina. The other structures—vitreous, retinal pigment epithelium, and optic nerve—don’t alter focusing power; they have roles in support, nourishment, and signal transmission.

Accommodation is the eye’s ability to adjust focus for objects at different distances by changing the lens’s refractive power. When you look at something up close, the ciliary muscle contracts, the zonular fibers relax, and the lens becomes thicker and more curved, increasing its refractive power to bring the near image into focus on the retina. For distant objects, the ciliary muscle relaxes, the zonules tighten, and the lens flattens, reducing its refractive power so the far image is sharp on the retina. The other structures—vitreous, retinal pigment epithelium, and optic nerve—don’t alter focusing power; they have roles in support, nourishment, and signal transmission.

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