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{{DiseaseDisorder infobox |
 
__NOTOC__
'''For patient information, click [[Hyperopia (patient information)|here]]'''{{DiseaseDisorder infobox |
   Name        = Hypermetropia |
   Name        = Hypermetropia |
   Image      = Hypermetropia.png |
   Image      = Hypermetropia.png |
   Caption    = Hyperopia, and restoring of vision with convex lens. |
   Caption    = Hyperopia, and restoring of vision with convex lens. |
}}
}}
{{SI}}
{{Hyperopia}}
 
 
{{CMG}}
{{CMG}}
{{SK}} Longsightedness; Farsightedness
==[[Hyperopia overview|Overview]]==
==[[Hyperopia historical perspective|Historical Perspective]]==
==[[Hyperopia classification|Classification]]==
==[[Hyperopia pathophysiology|Pathophysiology]]==
==[[Hyperopia causes|Causes]]==


==Overview==
==[[Hyperopia differential diagnosis|Differentiating Hyperopia from other Diseases]]==
'''Hyperopia''', also known as '''farsightedness''', '''longsightedness''' or '''hypermetropia''', is a [[defect]] of [[visual system|vision]] caused by an imperfection in the [[eye]] (often when the eyeball is too short or when the [[Lens (anatomy)|lens]] cannot become round enough), causing inability to [[Focus (optics)|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.


People with hyperopia can experience [[defocus aberration|blurred vision]], [[asthenopia]], [[accommodation (eye)|accommodative dysfunction]], [[binocular vision|binocular dysfunction]], [[amblyopia]], and [[strabismus]].<ref name="AOA Hyperopia">American Optometric Association. ''[http://www.aoa.org/documents/CPG-16.pdf Optometric Clinical Practice Guideline: Care of the patient with hyperopia.]'' 1997.</ref>
==[[Hyperopia epidemiology and demographics|Epidemiology and Demographics]]==


Hyperopia is often confused with [[presbyopia]],<ref name="WebMD">[http://www.webmd.com/content/article/63/72009 "Eye Health: Presbyopia and Your Eyes."] WebMD.com. October, 2005. Accessed September 21, 2006.</ref><ref>Chou B. [http://www.refractivesource.com/patients/ref_error_pres.htm "Refractive Error and Presbyopia."] Refractive Source.com Accessed September 20, 2006.</ref> another condition that frequently causes blurry near vision.<ref name="AOA Presbyopia">American Optometric Association. ''[http://www.aoa.org/documents/CPG-17.pdf Optometric Clinical Practice Guideline: Care of the patient with presbyopia.]'' 1998.</ref> 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]].<ref name="AOA Presbyopia"/> It is also sometimes referred to as farsightedness, since in otherwise normally-sighted persons it makes it more difficult to focus on near objects than on far objects.<ref>Kazuo Tsubota, Brian S. Boxer Wacher, Dimitri T. Azar, and Douglas D. Koch, editors, , ''Hyperopia and Presbyopia'', New York: Marcel Decker, 2003</ref>
==[[Hyperopia risk factors|Risk Factors]]==


==Classification of hyperopia==
==[[Hyperopia screening|Screening]]==
Hyperopia is typically classified according to clinical appearance, its severity, or how it relates to the eye's [[accommodation (eye)|accommodative status]].<ref name="AOA Hyperopia"/>


===Classification by clinical appearance===
==[[Hyperopia natural history, complications and prognosis|Natural History, Complications and Prognosis]]==
* Simple hyperopia
* Pathological hyperopia
* Functional hyperopia


==Diagnosis==
==Diagnosis==
[[Visual acuity]] is affected according to the amount of hyperopia, as well as the patient's age, visual demands, and accommodative ability.<ref name="AOA Hyperopia"/>
[[Hyperopia history and symptoms|History and Symptoms]] | [[Hyperopia physical examination|Physical Examination]]| [[Hyperopia laboratory findings|Laboratory Findings]] | [[Hyperopia other imaging findings|Other Imaging Findings]] | [[Hyperopia other diagnostic studies|Other Diagnostic Studies]]


==Treatment==
==Treatment==
Various [[eye care professional]]s, including [[ophthalmologist]]s, [[optometrist]]s, orthoptists, and [[optician]]s, 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 lens]]es.
[[Hyperopia medical therapy|Medical Therapy]] | [[Hyperopia surgery|Surgery]] | [[Hyperopia primary prevention|Primary Prevention]] | [[Hyperopia cost-effectiveness of therapy|Cost-Effectiveness of Therapy]] | [[Hyperopia future or investigational therapies|Future or Investigational Therapies]]
 
Minor amounts of hyperopia are sometimes left uncorrected, however, larger amounts may be corrected with [[Lens (optics)#Types of lenses|convex lens]]es in [[eyeglasses]] or [[contact lenses]]. Convex lenses have a positive [[dioptre|dioptric value]], which causes the light to focus closer than its normal range.


Hyperopia is sometimes correctable with various [[refractive surgery]] procedures (LASIK). It can also be corrected with special concave lenses.
== Case Studies ==
[[Hyperopia case study one|Case #1]]


==See also==
==Related Chapter==
*[[myopia|myopia (shortsightedness)]]
*[[myopia|myopia (shortsightedness)]]
==References==
{{Reflist|2}}
==External links==
==External links==
*[http://www.pupileyes.com/index.php?content=hyperopia&lang=english pupilEyes - Learn how Hyperopia happens]
*[http://www.pupileyes.com/index.php?content=hyperopia&lang=english pupilEyes - Learn how Hyperopia happens]
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{{Eye pathology}}
{{Eye pathology}}
[[Category:Eye]]
[[Category:Eye]]
[[Category:Optometry]]
[[Category:Optometry]]
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[[Category:Primary care]]
[[Category:Primary care]]
[[Category:Disease]]
[[Category:Disease]]
[[bg:Далекогледство]]
[[ca:Hipermetropia]]
[[cs:Dalekozrakost]]
[[da:Langsynethed]]
[[de:Weitsichtigkeit]]
[[et:Kaugnägelikkus]]
[[es:Hipermetropía]]
[[eo:Hipermetropio]]
[[eu:Hipermetropia]]
[[fr:Hypermétropie]]
[[it:Ipermetropia]]
[[he:רוחק ראייה]]
[[lt:Toliaregystė]]
[[ml:ദീര്‍ഘദൃഷ്ടി]]
[[nl:Verziendheid]]
[[ja:遠視]]
[[no:Hypermetropi]]
[[pl:Nadwzroczność]]
[[pt:Hipermetropia]]
[[ru:Дальнозоркость]]
[[sk:Ďalekozrakosť]]
[[sl:Daljnovidnost]]
[[fi:Kaukotaittoisuus]]
[[sv:Översynthet]]
[[vi:Viễn thị]]
[[tr:Hipermetropi (göz kusuru)]]
[[uk:Далекозорість]]
[[zh:遠視]]
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Revision as of 04:38, 16 May 2013


For patient information, click hereTemplate:DiseaseDisorder infobox


Hyperopia Microchapters

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Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Hyperopia from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Primary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Hyperopia On the Web

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[1]

American Roentgen Ray Society Images of Hyperopia

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Risk calculators and risk factors for Hyperopia


Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2] Synonyms and keywords: Longsightedness; Farsightedness

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Hyperopia from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms | Physical Examination| Laboratory Findings | Other Imaging Findings | Other Diagnostic Studies

Treatment

Medical Therapy | Surgery | Primary Prevention | Cost-Effectiveness of Therapy | Future or Investigational Therapies

Case Studies

Case #1

Related Chapter

External links

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