farsightedness


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hyperopia

 [hi″per-o´pe-ah]
a defect of vision in which parallel light rays reaching the eye come to focus behind the retina, vision being better for distant objects than for near. Called also farsightedness.

Most children are born with some degree of farsightedness. As the child grows this decreases and usually disappears by the age of 8 years. If the child is excessively farsighted, however, the constant effort to focus may cause headaches and fatigue. Eyeglasses used to correct hyperopia are convex; that is, they bend the light rays toward the center, helping the lens of the eye to focus them on the retina.
Refraction and correction in hyperopia. From Ignatavicius and Workman, 2002.

hy·per·o·pi·a (H),

(hī'pĕr-ō'pē-ă),
Longsightedness; that optic condition in which only convergent rays can be brought to focus on the retina.
[hyper- + G. ōps, eye]

farsightedness

(fär′sī′tĭd-nĭs)
n.

farsightedness

Hyperopia, see there.

hy·per·o·pi·a

(H) (hī'pĕr-ō'pē-ă)
An ocular condition in which only convergent rays can be brought to focus on the retina.
Synonym(s): farsightedness, hypermetropia.
[hyper- + G. ōps, eye]

hy·per·o·pi·a

(H) (hī'pĕr-ō'pē-ă)
An ocular condition in which only convergent rays can be brought to focus on the retina.
Synonym(s): farsightedness, hypermetropia.
[hyper- + G. ōps, eye]

Patient discussion about farsightedness

Q. Is there a laser vision correction operation that will correct both near and farsightedness? My optometrist said that typical laservision would require that I wear glasses for reading since it only corrects farsightedness. I'm leery of the technique of doing only one eye for distance and leaving the other "as is" for reading. I seem to recall a brief news report of some new laser vision technique that corrects both near- and farsightedness. Is that true or were they referring to the "one eye for closeup and one eye for distance" type of correction that I'm skeptical about? Thanks!!

A. my mother-in-law had that done about a yeara ago,for both near and far,they make them the oppisite,i had my near sightness fixed two years ago and i love it should of done it sooner.....

More discussions about farsightedness
References in periodicals archive ?
* Astigmatism often combined with nearsightedness or farsightedness, occurs when the clear cornea has a non-round curvature - more like a teaspoon.
"Afghanistan can find solutions to its problems, but those seeking to help it need great wisdom, courage, and farsightedness. This is the ultimate challenge that Afghanistan poses for the next US president," said William Maley, professor and director of the Asia-Pacific College of Diplomacy at the Australian National University.
You cannot compensate for your eyes' astigmatism when using binoculars or a telescope by merely refocusing the instrument, though this trick can negate mere near-or farsightedness. (The eye shown above suffers from both astigmatism and myopia.)
Today, RK has been replaced almost entirely by Lasik, which is used in about 95% of the surgical procedures to correct nearsightedness, farsightedness and astigmatism.
In one famous rumination on the tube, "Television: Set and Screen" (1996), Samuel Weber reminds us that the word television, literally rendered, means "seeing at a distance" or, better, "farsightedness." And while the "Perpetual Photos" were his only works based on TV per se, such a concept neatly describes nearly all of McCollum's methods, which hover deliciously between sharp institutional critique and melancholy visual poetics.
Some doctors question how the lens will affect younger eyes as patients age, and Shoemaker acknowledges, "Someone in their 40s with low to moderate near or farsightedness would be better off with LASIK."
A relatively new form of refractive surgery called conductive keratoplasty (CK), already approved to treat farsightedness, is being used to treat presbyopia, even though it isn't yet specifically approved by the U.S.
Anamed, Inc., Lake Forest, CA, announced the US Food and Drug Administration (FDA) has allowed the Phase II expansion of the clinical trial with its PermaVision intracorneal lens for the correction of hyperopia (farsightedness) up to +i6 diopters.
Though flawed, Jones embodied much of what it meant to be an American, leading presidents and admirals to praise him profusely for strategic farsightedness and prevailing over modest circumstances.
Laser surgery is for people who have standard vision problems, like nearsightedness or farsightedness, says Dr.
To have booked him up now, when he still has the less cluttered diary of the leader of the Church in Wales, rather than once the appointment had been made, shows an admirable degree of farsightedness on the part of Mr John and the diary salutes him for it.
"We hope that the governor's farsightedness in this matter will extend to working with the legislature to develop a realistic legislative solution to no-fault fraud."