AskDefine | Define farsighted

Dictionary Definition

farsighted adj
1 able to see distant objects clearly [syn: presbyopic] [ant: nearsighted]
2 planning prudently for the future; "large goals that required farsighted policies"; "took a long view of the geopolitical issues" [syn: farseeing, foresighted, foresightful, long, longsighted]

User Contributed Dictionary

English

Adjective

  1. Being unable to focus with one's eyes on near objects.
  2. Being considerate about the future with respect to one's own plans or deeds; showing anticipation.

Synonyms

Antonyms

Derived terms

Translations

Extensive Definition

Hyperopia, also known as hypermetropia or colloquially as farsightedness or longsightedness, is a defect of vision caused by an imperfection in the eye (often when the eyeball is too short or when the lens cannot become round enough), causing inability to focus on near objects, and in extreme cases causing a sufferer to be unable to focus on objects at any distance. As an object moves toward the eye, the eye must increase its power to keep the image in focus on the retina. If the power of the cornea and lens is insufficient, as in hyperopia, the image will appear blurred.
Hyperopia is often confused with presbyopia , another condition that frequently causes blurry near vision. Presbyopes who report good far vision typically experience blurry near vision because of a reduced accommodative amplitude brought about by natural aging changes with the crystalline lens.

Classification of hyperopia

Hyperopia is typically classified according to clinical appearance, its severity, or how it relates to the eye's accommodative status.

Classification by clinical appearance

  • Simple hyperopia
  • Pathological hyperopia
  • Functional hyperopia

Diagnosis

Visual acuity is affected according to the amount of hyperopia, as well as the patient's age, visual demands, and accommodative ability.

Treatment

Various eye care professionals, including ophthalmologists, optometrists, orthoptists, and opticians, are involved in the treatment and management of hyperopia. At the conclusion of an eye examination, an eye doctor may provide the patient with an eyeglass prescription for corrective lenses.
Minor amounts of hyperopia are sometimes left uncorrected, however, larger amounts may be corrected with convex lenses in eyeglasses or contact lenses. Convex lenses have a positive dioptric value, which causes the light to focus closer than its normal range.
Hyperopia is sometimes correctable with various refractive surgery procedures.

Notes

farsighted in Catalan: Hipermetropia
farsighted in Czech: Dalekozrakost
farsighted in Danish: Langsynethed
farsighted in German: Weitsichtigkeit
farsighted in Spanish: Hipermetropía
farsighted in Esperanto: Hipermetropio
farsighted in Basque: Hipermetropia
farsighted in French: Hypermétropie
farsighted in Italian: Ipermetropia
farsighted in Hebrew: רוחק ראייה
farsighted in Lithuanian: Toliaregystė
farsighted in Dutch: Verziendheid
farsighted in Japanese: 遠視
farsighted in Norwegian: Hypermetropi
farsighted in Polish: Nadwzroczność
farsighted in Portuguese: Hipermetropia
farsighted in Russian: Дальнозоркость
farsighted in Slovak: Ďalekozrakosť
farsighted in Slovenian: Daljnovidnost
farsighted in Swedish: Översynthet
farsighted in Vietnamese: Viễn thị
farsighted in Turkish: Hipermetropi (göz kusuru)
farsighted in Chinese: 遠視

Synonyms, Antonyms and Related Words

Privacy Policy, About Us, Terms and Conditions, Contact Us
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2
Material from Wikipedia, Wiktionary, Dict
Valid HTML 4.01 Strict, Valid CSS Level 2.1