Question

What is use of the lens in our eyes

Answer 1

The lens is located in the eye. By changing its shape, the lens changes the focal distance of the eye. In other words, it focuses the light rays that pass through it (and onto the retina) in order to create clear images of objects that are positioned at various.

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Answer 2

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What is use of the lens in our eyes?

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① The lens is located in the eye. By changing its shape, the lens changes the focal distance of the eye.

② The lens focuses light through the vitreous humor, a clear gel-like substance that fills the back of the eye and supports the retina.

③ The retina receives the image that the cornea focuses through the eye's internal lens and transforms this image into electrical impulses that are carried by the optic nerve to the brain.

④ The lens is of ellipsoid, biconvex shape. An ellipsoid is similar to a sphere but stretched out, like an olive, and biconvex means it’s rounded outward on both sides.

⑤ The lens is about 10 mm across and 4 mm from front to back in adults, although its shape and size varies as it changes its focus.

⑥ Common diseases of the lens include cataracts, which cause opacity, or cloudiness, in the lens. Other common ailments are presbyopia, ectopia lentis, aphakia, and nuclear sclerosis.