What is farsightedness and what can be done to correct it?

Farsightedness, or hyperopia, occurs when the lens of the eye can see objects far away, but cannot focus in on objects at closer range. The cornea and lens of the person with farsightedness cause the image to focus behind the retina, resulting in the images from objects close to the eye to be blurred. In order to correct for farsightedness, a convex lens is used to converge the light rays closer together, permitting the image to fall on the retina. The rigidity in the eyelens that affects older people, making them unable to focus on close objects, is called presbyopia.


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