The amount of light entering the eye is regulated by the
A) iris.
B) retina.
C) optic nerve.
D) feature detectors.

Question

Quizplus · Accepted Answer

The iris is responsible for regulating the amount of light entering the eye by controlling the size of the pupil. In bright light, the iris contracts to make the pupil smaller to reduce the amount of light that enters the eye, while in dim light, the iris dilates to make the pupil larger to allow more light to enter. The retina, optic nerve, and feature detectors are not involved in regulating the amount of light entering the eye.

The Amount of Light Entering the Eye Is Regulated by the