When do we consider a person to be myopic and 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 and hypermetropic?Explain us

1.	When do we consider a person to be myopic and hypermetropic?Explain using diagrams how the defects associated with myopic and hypermetropic eye can be corrected?
Answer» Solution :Myopic This term is used to define short sightedness. Light from a distant object forms an image before it reaches the retina. This could be because the eye is too LONG or the cornea or crystalline LENS is too strong. A myopic person has clear vision when looking at objects CLOSE to them but distant objects will appear blurred. Tocorrect this defects a concave lens (MINUS powered) is placed in front of a myopic eye, moving the image back to the retina and clarifying the image. Hypermetropic It means long sightedness, and, in which the image of a nearby object is formed behind the retina.This could be because the eye is too short or the cornea or crystalline lens does not refractthe light enough. A hypermetropic person may have blurred vision when looking at objects close to them and clearer vision when looking at objects in th distance. To correct this defectsa CONVEX lens (plus powered) in front of a hypermetropic eye, the image is moved forward and focuses correctly on the retina.