The focal length of the lens in eye is controlled by

Vitreous humor

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Ciliary muscles

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Iris muscles

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Pupil

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Solution

The correct option is A Ciliary muscles
The change in the shape of the lens is controlled by the cilliary muscles inside the eye. Changes in contraction of the ciliary muscles alter the focal distance of the eye, causing nearer or farther images to come into focus on the retina; this process is known as accommodation.

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Similar questions

Ciliary muscles are responsible for changing the focal length of the eye lens according to the distance of the object.

Contraction of the ciliary muscles ____ the focal length of the eye lens.

The change in focal length of an eye lens is caused by the action of the

(a) pupil

(b) retina

(d) iris

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