What part of the eye changes diameter to regulate the amount of light entering the lens?
A) ciliary body
B) iris
C) pupil
D) lens

Question

Quizplus · Accepted Answer

The diameter of the pupil changes to regulate the amount of light entering the lens. The iris controls the size of the pupil and adjusts it to allow more or less light to enter the eye. The ciliary body is responsible for changing the shape of the lens to focus on objects at different distances, and the lens itself helps to refract light onto the retina.

What Part of the Eye Changes Diameter to Regulate the Amount