The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question. The eye defect can be corrected by the use of?

The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.

The eye defect can be corrected by the use of?

Answer Details

The diagram shows an illustration of a person with myopia, also known as nearsightedness, where distant objects appear blurry. This eye defect can be corrected by using a concave lens. A concave lens is thinner at the center and thicker at the edges, causing light rays entering the lens to spread out, which counteracts the focusing power of the myopic eye. When the concave lens is placed in front of the myopic eye, it corrects the angle at which light enters the eye, and the image is focused correctly on the retina, resulting in clearer vision. In contrast, a convex lens is thicker at the center and thinner at the edges, and it can be used to correct hyperopia or farsightedness. A cylindrical lens is used to correct astigmatism, which is a condition where the cornea has an irregular shape, causing blurry vision at all distances. Bifocal lenses are used to correct presbyopia, an age-related condition where the eye loses its ability to focus on nearby objects.