What is the main function of the rods in the eye?

Each of the following statements is false. Correct each statement to make it true.

Rods and cones are found in the fovea centralis.

Each of the following statements is false. Correct each statement to make it true.

In the dark, rods and cones produce action potentials.

You are at a park watching some deer 35 feet away from you. A friend taps you on the shoulder to ask a question. As you turn to look at your friend, who is standing just 2 feet away, what changes would your eyes undergo?

Your friend Shelly suffers from myopia (nearsightedness). You remember from your physics class that concave lenses cause light waves to spread or diverge and that convex lenses cause light waves to converge. What type of corrective lenses would you suggest to your friend?

(a) Concave lenses

(b) Convex lenses