Question

which of the following structures is responsible for refracting light rays?
a pupil
b lens
c iris
d cornea

Explanation:

• The pupil is the opening that controls the amount of light entering the eye.
• The iris is the colored part that controls the size of the pupil.
• The cornea is the clear front part of the eye that helps to refract (bend) light, but the lens also refracts light rays. The lens fine - tunes the refraction after the initial refraction by the cornea.

Answer:

B. lens, D. cornea