An optometrist tests a patient's visual accommodation reflex. The patient is asked to shift their focus from a distant target on the wall to read small text on a card held just 25 cm in front of their eyes.
Using the diagram above as a guide, which of the following options correctly describes the changes that must occur in the ciliary muscles, suspensory ligaments, and lens shape for the patient to focus clearly on the near text?
Ciliary muscles contract; suspensory ligaments slacken; lens becomes thicker and more convex
Ciliary muscles relax; suspensory ligaments tighten; lens becomes thinner and less convex
Ciliary muscles contract; suspensory ligaments tighten; lens becomes thinner and less convex
Ciliary muscles relax; suspensory ligaments slacken; lens becomes thicker and more convex
