Final answer:
Farsightedness, or hyperopia, is corrected with a converging lens and affects people who can see distant objects clearly but not close ones due to the eye being too short, resulting in images focused behind the retina.
Step-by-step explanation:
Farsightedness, or hyperopia, is a vision problem in which a person can see distant objects clearly, but has poor vision for close objects. This condition occurs because the eye is too short, causing images to be focused behind the retina rather than directly on it. To correct hyperopia, a converging lens is used to increase the optical power of the eye, ensuring that images fall properly on the retina. The lens typically used is convex, curving outward, which adjusts the focus of light rays so that near objects can be seen clearly. On the other hand, nearsightedness, or myopia, is characterized by the ability to see close objects clearly while distant objects appear blurry, and it is corrected using a diverging lens to reduce the eye's optical power.