What lens used to correct nearsightedness?

Answer 1

Convex lenses are thicker in the middle then the edges and concave are thicker at the edges then the middle. When light travels through lenses, refraction occurs. The light bends either outward or inward, it depends on the lens.

The lens of your eye is a double convex lens. Its job is to focus the image on the retina of the eye. If one is farsighted, the lens in the eye causes the focus to be behind the retina. These people see far but have some difficultly seeing close-up.

To correct this farsightedness, the person would wear glasses or contacts with convex lenses, for It is often used for close examination of small objects.

Answer 2

Eyeglasses or contact lenses with concave (minus) lenses are commonly used to correct nearsightedness (myopia). These lenses help focus light rays properly onto the retina, improving distance vision for individuals with nearsightedness.

Answer 3

Long sightedness is corrected by wearing spectacles having convex lens of such a focal length which forms a virtual image of the object. Hence a clear image of the object is formed on retina.

Short sightedness can be corrected by wearing spectacle having suitable concave lens. This concave lens helps the light, coming from the object, to diverge.

Answer 4

Farsightedness can usually be corrected using convex lenses.

Answer 5

The lenses needed if you are nearsighted are Concave Lenses

Answer 6

Concave lenses are used to correct nearsightedness.

Answer 7

a concave lens

Answer 8

concave and diverging

Answer 9

a converging lens or concave

Answer 10

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