Question

explain with diagram nearsightedness and farsightedness
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Answer 1

Answer:

1. Nearsightedness (myopia) is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry. It occurs when the shape of your eye causes light rays to bend (refract) incorrectly, focusing images in front of your retina instead of on your retina.
2. The simplest method of correcting hyperopia is with eyeglasses. The lenses in glasses compensate for the refractive error of your eye. In other words, eyeglasses change the angle at which light hits your retina, giving clarity to the image you see.

Explanation:

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Answer 2

Answer:

Explanation:

nearsightedness

light rays focus in front of the retina

causes - eyeball too long, lens too convex

farsightedness

light rays focus behind the retina

causes - eyeball too short, lens not convex enough