Question

The change in focal of an eye lens is caused by the action of ::
pupil
Retina
ciliary muscles
iris​

Answer 1

Answer:

The ciliary muscle is a circular muscle that relaxes or tightens the zonules to enable the lens to change shape for focusing. ... It increases or decreases the focal length of the eye lens.

Answer 2

Answer:

ciliary muscles

Explanation:

added an attachment as there was a problem uploading thw words...

hope it helps