Question

what is miopia and what is hypermetropia.... ​

Answer 1

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myopia ;-

myopia is also known as short sightedness in which a person is able to see the objects lying close to it.

causes ;-

eyeball becomes too long due to which the image of object is formed above retina.

correctness ;-

this defect can be corrected by using concave lens of defined power.

HYPERMETROPIA

this defect is also known as long sightedness in which a person can see the objects that are lying far from it.

cause of defect ;-

eyeball becomes too short due to which the rays are converged behind retina.

correctness ;-

this defect can be corrected by using a convex lens of defined power.

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Answer 2

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.

Hypermetropia (long-sightedness) is a common eye condition where nearby objects appear blurred, but your vision is clearer when looking at things further away. If you feel your eyes are often tired and you have problems focusing on objects close to your eyes, you may have hypermetropia.