The shape of the lens is controlled by the

Question

Quizplus · Accepted Answer

The shape of the lens is controlled by the ciliary muscles. When the ciliary muscles contract, they relax the tension on the zonular fibers, allowing the lens to become more rounded and thicker, which is necessary for near vision. When the ciliary muscles relax, the tension on the zonular fibers is increased, causing the lens to become flatter and thinner, which is necessary for distant vision. The pupillary sphincter and radial muscles control the size of the pupil, and the iris is responsible for the color of the eye.

The Shape of the Lens Is Controlled by the