Question

What is the cause of Myopia and Hypermetropia? What type of lens are used for its correction​

Answer 1

Answer:

Myopia: 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.

Hypermetropia: The eye is shorter than normal in the case of hypermetropia and the image focuses behind the retina if the target object is near. This means it doesn’t focus even when it reaches the retina.

Hence, concave lens for myopia and convex lens for hypermetropia

Answer 2

Answer:

Farsightedness (hyperopia) is the opposite of myopia, and is usually caused by shortening of the eyeball. Astigmatism is an imperfection of the cornea preventing part of it from focusing light onto the retina.

convex lens is used for hypermetropia and

concave for myopia.