Farsightedness or Hyperopia
For the farsighted eye, close objects are out of focus.
The refractive power of the cornea is too low or the eye itself is too short. For farsighted people, light rays from close objects are focused behind the retina, causing a blurry image of the environment.
Anatomy of a farsighted eye. Click here for an animated demonstration of farsightedness.
Unlike the nearsighted eye, farsightedness can be partially compensated for by the natural lens of the eye, but only up to a certain age. The lens has the ability to change its shape to give the eye increased refractive power, thus balancing the farsighted eye’s reduced refractive power for distance vision.
Distance vision of farsighted people generally remains good into old age. Eyeglasses need to be worn at a younger age only for those people with a very high level of farsightedness.
Since the ability of the eye lens to change shape is reduced with increased age, the farsighted person will need reading glasses sooner than the person with normal vision. At a later stage in life, correction for distance vision will be necessary as well because the ability of the lens to change shape decreases to a point that sharp images for distance vision are no longer produced.
Today, there are several surgical procedures available to correct farsightedness:
|Eye laser procedures||Farsightedness|
|Femto-LASIK (individual LASIK)||up to +4 dpt.|
|Monovision LASIK||up to +4 dpt. (in combination with presbyopia)|
|Phakic lens implant||+1 to +12 dpt.|
|Laser refractive lens surgery
||from +4 dpt.|
|Multifocal lenses||yes (in combination with presbyopia)|