Farsightedness, or hyperopia, is caused by the eyeball being too short, resulting in difficulty focusing on close objects. Corrective lenses or Lasik surgery can help.
Farsightedness is a common eye problem. Typically, it is caused by the eyeball being too short, so that the lens focuses an image behind the retina, rather than on the retina. Often, children who suffer from this condition outgrow as they grow and their eyes expand in size. The official medical term is hyperopia. Its opposite is myopia, or myopia.
People with foresight can focus on objects that are far away, but cannot focus on objects that are closer to them. Reading, watching television and working on a computer are all difficult, uncomfortable or impossible for them without corrective lenses.
The eye has to react to the input it receives, so the muscles that control the eye tighten or relax the lens, which changes shape to focus light rays. Over time, the lens may become less flexible or the muscles less effective. As a result, some people develop farsightedness in later life.
Correcting this condition is simply a matter of adding a lens in front of the eye’s lens that adds convergence to light rays, so that when they reach the retina, they form an image. The curvature of the corrective lens depends on the extent of hyperopia. This exact curvature is specific to each individual and can be different for each eye. These numbers, the parameters of each lens, are your prescription for eyeglasses or contact lenses.
Farsightedness can now be corrected with a laser surgery process called Lasik or laser in situ keratomileusis. In this procedure, a small piece of the lens is removed, then the lens is reshaped with a laser beam, and the removed piece is replaced to cover the lens. The lens is reshaped to be more rounded or convex. Farsightedness occurs in about twenty-five percent of the population.
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