Which of the following occurs during accommodation for near vision?
A) Ciliary muscles contract, causing zonular fibers to become tight, flattening the lens.
B) Ciliary muscles contract, causing zonular fibers to become tight, and the lens becomes rounder.
C) Ciliary muscles contract, causing zonular fibers to become slack, flattening the lens.
D) Ciliary muscles contract, causing zonular fibers to become slack, and the lens becomes rounder.
E) Ciliary muscles relax, causing zonular fibers to become slack, and the lens becomes rounder.

Question

Quizplus · Accepted Answer

When accommodating for near vision, the ciliary muscles contract, which in turn causes the zonular fibers (or suspensory ligaments) to become slack. This allows the lens to become rounder, increasing its refractive power to focus on close objects.

Which of the Following Occurs During Accommodation for near Vision