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- Visual_impairment abstract "Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction or medication. This functional loss of vision is typically defined to manifest with best corrected visual acuity of less than 20/60, or significant central field defect, significant peripheral field defect including homonymous or heteronymous bilateral visual, field defect or generalized contraction or constriction of field, or reduced peak contrast sensitivity with either of the above conditions.In the United States, the terms "partially sighted", "low vision", "legally blind" and "totally blind" are used by schools, colleges, and other educational institutions to describe students with visual impairments. They are defined as follows:Partially sighted indicates some type of visual problem, with a need of person to receive special education in some cases;Low vision generally refers to a severe visual impairment, not necessarily limited to distance vision. Low vision applies to all individuals with sight who are unable to read the newspaper at a normal viewing distance, even with the aid of eyeglasses or contact lenses. They use a combination of vision and other senses to learn, although they may require adaptations in lighting or the size of print, and, sometimes, Braille;Myopic - unable to see distant objects clearly, commonly called near-sighted or short-sightedHyperopic - unable to see close objects clearly, commonly called far-sighted or long-sightedLegally blind indicates that a person has less than 20/200 vision in the better eye after best correction (contact lenses or glasses), or a field of vision of less than 20 degrees in the better eye; andTotally blind students learn via Braille or other non-visual media.Visual impairment is the consequence of a functional loss of vision, rather than the eye disorder itself. Eye disorders which can lead to visual impairments can include retinal degeneration, albinism, cataracts, glaucoma, muscular problems that result in visual disturbances, corneal disorders, diabetic retinopathy, congenital disorders, and infection." Visual impairment can also be caused by brain and nerve disorders, in which case it is usually termed cortical visual impairment (CVI).The American Medical Association's Guides to the Evaluation of Permanent Impairment attempts to provide "a standardized, objective approach to evaluating medical impairments." The Visual System chapter "provides criteria for evaluating permanent impairment of the visual system as it affects an individual's ability to perform activities of daily living." The Guide has estimated that the loss of one eye equals 25% impairment of the visual system and 24% impairment of the whole person; total loss of vision in both eyes is considered to be 100% visual impairment and 85% impairment of the whole person.Visual impairments have considerable economic impact on even developed countries. 'A major proportion of global visual impairment is preventable'. An update based on census data of 2010 in the United States projects that 13 million Americans aged 40 and older will have a visual impairment or be blind by the year 2050.".
- Visual_impairment icd10 "H54".
- Visual_impairment icd9 "369".
- Visual_impairment thumbnail Hyperopia.gif?width=300.
- Visual_impairment wikiPageExternalLink low-vision.org.
- Visual_impairment wikiPageExternalLink low-vision-rehabilitation-2.
- Visual_impairment wikiPageExternalLink ddvi.htm.
- Visual_impairment wikiPageExternalLink disability.
- Visual_impairment wikiPageExternalLink eye_conditions.aspx.
- Visual_impairment wikiPageExternalLink en.
- Visual_impairment wikiPageID "2158298".
- Visual_impairment wikiPageRevisionID "596791520".
- Visual_impairment hasPhotoCollection Visual_impairment.
- Visual_impairment wordnet_type synset-disease-noun-1.
- Visual_impairment subject Category:Diseases_of_the_eye_and_adnexa.
- Visual_impairment type Disease.
- Visual_impairment type AilmentCondition.
- Visual_impairment type Situation.
- Visual_impairment comment "Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction or medication.".
- Visual_impairment label "Sehbehinderung".
- Visual_impairment label "Trouble de la vision".
- Visual_impairment label "Visual impairment".
- Visual_impairment label "Visuele handicap".
- Visual_impairment label "Wada wzroku".
- Visual_impairment label "ضعف البصر".
- Visual_impairment label "視力障礙".
- Visual_impairment sameAs Oftalmopedie.
- Visual_impairment sameAs Sehbehinderung.
- Visual_impairment sameAs Trouble_de_la_vision.
- Visual_impairment sameAs 시각_장애.
- Visual_impairment sameAs Visuele_handicap.
- Visual_impairment sameAs Wada_wzroku.
- Visual_impairment sameAs m.032l0v.
- Visual_impairment sameAs Q737460.
- Visual_impairment sameAs Q737460.
- Visual_impairment wasDerivedFrom Visual_impairment?oldid=596791520.
- Visual_impairment depiction Hyperopia.gif.
- Visual_impairment isPrimaryTopicOf Visual_impairment.
- Visual_impairment name "Visual impairment".
