Yasmine is trying to read a dimly lit sign in the dark. Based on your knowledge of rods and cones, where should Yasmine look to improve the visual clarity of the sign?
A) Directly at the sign, such that the visual image is lined up on her fovea.
B) Slightly to the side of the sign so the sign's image will fall outside the fovea and onto the sides of the retina.
C) Directly at the sign, but only with one eye, thus reducing the binocular disparity.
D) With one eye closed, allowing the image to stimulate just one fovea.

Question

Quizplus · Accepted Answer

Yasmine should look slightly to the side of the sign so the sign's image falls outside her fovea and onto the sides of her retina. This will increase the involvement of her peripheral vision, which is primarily made up of rods. Rods are more sensitive to dim light and are better suited to detect low levels of light. By utilizing her peripheral vision, Yasmine can improve the clarity of the sign in dim lighting conditions.

Yasmine Is Trying to Read a Dimly Lit Sign in the Dark