Question

What kind of lens is there in our eyes? Where does it form the image of an object?

Answer 1

Lens used in eye

1. The eye is a part of the brain.
2. Our eyes have a convex lens that focuses light on the retina, which is located at the rear of the eye. Convex lenses with various focal lengths make up our eye lenses.
3. Muscles govern the focal length of the eye lens based on the distance of the object we're trying to see from us.

Image formation in the eye

1. An image of an item is formed in the retina.
2. The convex lens is thicker in the middle and thinner at the edges. It's a pair of converging lenses.
3. It comprises a small spherical globe with a diameter of about 2 cm that rotates freely under the guidance of six extrinsic muscles.
4. Light enters the eye through the clear cornea, then passes through the aqueous humor, lens, and vitreous humor before forming a picture on the retina.

6. The retina is a light-sensitive layer made up of a lot of nerve cells.

7. It turns the lens' pictures into electrical impulses. Through the optic nerves, these electrical impulses are subsequently conveyed to the brain.

8. The retina serves as a screen on which an object's picture is produced.