When do we consider a person to be myopic or hypermetropic? Explain using diagrams how the defects associated with myopic and hypermetropic eye can be corrected?
When do we consider a person to be myopic or hypermetropic? Explain using diagrams how the defects associated with myopic and hypermetropic eye can be corrected?

Answer:

Myopia is a condition in which a person’s ability to see distant objects clearly is impaired. Myopia is a condition in which the image is created in front of the retina rather than behind the retina.

When a person can’t see the objects in his or her immediate vicinity clearly, he or she is said to be hypermetropic. Hypermetropia is a condition in which the image is created in front of the retina rather than in front of it.

Myopia can be corrected.

Myopia can be remedied with the use of a concave lens of the appropriate power. A concave lens with a sufficient power will put the picture back onto the retina, so correcting the fault in the vision.

The use of a convex lens of appropriate power can be used to rectify hypermetropia. Converging lenses in eyeglasses give the additional focusing power required for the formation of the picture on the retinal surface.