Which term describes the process of adjusting the lens to focus on objects at different distances?

Which term describes the process of adjusting the lens to focus on objects at different distances?

• A. Aqueous humor
• B. Pupil
• C. Accommodation
• D. Lens

Answer: (C)

Accommodation is the process of adjusting the lens curvature to focus on objects at different distances. The lens, held in place by zonular fibers and acted on by the ciliary muscle, changes shape to alter its focal power. When you look at something close, the ciliary muscle contracts, loosening the zonules, and the lens becomes thicker and more curved, increasing its refractive power to focus near objects on the retina. When you look at something far away, the ciliary muscle relaxes, the zonules tighten, and the lens flattens, reducing its focal power for distant vision. The aqueous humor and the pupil are related to eye function but do not describe this focusing process; the term specifically refers to how the lens shape changes to adjust focal distance.

Accommodation is the process of adjusting the lens curvature to focus on objects at different distances. The lens, held in place by zonular fibers and acted on by the ciliary muscle, changes shape to alter its focal power. When you look at something close, the ciliary muscle contracts, loosening the zonules, and the lens becomes thicker and more curved, increasing its refractive power to focus near objects on the retina. When you look at something far away, the ciliary muscle relaxes, the zonules tighten, and the lens flattens, reducing its focal power for distant vision. The aqueous humor and the pupil are related to eye function but do not describe this focusing process; the term specifically refers to how the lens shape changes to adjust focal distance.