Question

What is myopia ? what type of lens is use for its correction?

Answer 1

   Myopia is more commonly known as nearsightedness. It is is when you cannot see objects at a distance, such as a book , letters on white board etc.

 If the eye has myopia, the eye is too long,  and the image falls short of the retina when the target object is far away.

Myopia may be corrected with lenses.  Concave lenses are used here.  They spread the light out before it reaches the convex lens in the eye, therefore letting the image focus directly on the retina.

Answer 2

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What is myopia ? what type of lens is use for its correction?


Answer:+To correct the problem, the lens must be weakened. To weaken the lens, a diverging lens.

Myopia is corrected by spectacles or contact lenses with lenses which are 'minus' or concave iin shape