Gourt > Health > Conditions and Diseases > Eye Disorders > Blindness (3)
Blindness is the condition of lacking visual perception due to physiological or psychological factors.
Various scales have been developed to describe the extent of vision loss and define "blindness"International Council of Ophthalmology. "International Standards: Visual Standards - Aspects and Ranges of Vision Loss with Emphasis on Population Surveys." April 2002.. Total blindness is the complete lack of form and light perception and is clinically recorded as "NLP", an abbreviation for "no light perception". "Blindness" is frequently used to describe severe visual impairment with residual vision. In order to determine which people may need special assistance because of their visual disabilities, various governmental jurisdictions have formulated more complex definitions referred to as legal blindessBelote, Larry. "Low Vision Education and Training: Defining the Boundaries of Low Vision Patients." A Personal Guide to the VA Visual Impairment Services Program. Retrieved March 31, 2006.. In North America and most of Europe, legal blindness is defined as visual acuity (vision) of 20/200 (6/60) or less in the better eye with best correction possible. This means that a legally blind individual would have to stand 20 feet from an object to see it with the same degree of clarity as a normally sighted person could from 200 feet. In many areas, people with average acuity who nonetheless have a visual field of less than 20 degrees (the norm being 180 degrees) are also classified as being legally blind. Approximately ten percent of those deemed legally blind, by any measure, are fully sightless. The rest have some vision, from light perception alone to relatively good acuity. Those who are not legally blind, but nonetheless have serious visual impairments, possess low vision.
By the 10th Revision of the WHO International Statistical Classification of Diseases, Injuries and Causes of Death, low vision is defined as visual acuity of less than 6/18, but equal to or better than 3/60, or corresponding visual field loss to less than 20 degrees, in the better eye with best possible correction. Blindness is defined as visual acuity of less than 3/60, or corresponding visual field loss to less than 10 degrees, in the better eye with best possible correction.
More on [ Blindness ]
Low Vision Aids :: Assistive Technology
Service Animals :: Disabled
Blind :: Disabled
Video: Change Blindness (via Nonconceptualcontent) http://tumblr.com/xr34qpqs9
jeffreymfoster (Jeffrey M Foster) Thu, 17 Dec 2009 00:36:28 -0000
Video: Change Blindness (via Nonconceptualcontent) http://tumblr.com/xr34qpqs9
@lanettecream: I lost my keys and must've Iooked in the same place 4 times. Funny, I found them on the 5th (see "inattentional blindness")
jbtestpilot (Jon Bach) Thu, 17 Dec 2009 00:34:35 -0000
@lanettecream: I lost my keys and must've Iooked in the same place 4 times. Funny, I found them on the 5th (see "inattentional blindness")
Experimental Psychology - Change Blindness http://mag.ma/244249 proof that we don't pay attention to biggest changes!
osakin (osakin) Thu, 17 Dec 2009 00:31:47 -0000
Experimental Psychology - Change Blindness http://mag.ma/244249 proof that we don't pay attention to biggest changes!
@whatimeantosay I think you're conflating color apathy with color blindness. =]
terralthra (terralthra) Thu, 17 Dec 2009 00:28:30 -0000
@whatimeantosay I think you're conflating color apathy with color blindness. =]
Never fails to surprise me how many men are in the beauty industry, since color blindness is so common among men.
whatimeantosay (Meredith) Thu, 17 Dec 2009 00:11:45 -0000
Never fails to surprise me how many men are in the beauty industry, since color blindness is so common among men.
Love is blindness de U2, es una de mis canciones favoritas y me late que tenga tantas versiones, esta de Devlins y Sharon Shannon. Agasajo.
Arcgab (Gabriel Rojas) Thu, 17 Dec 2009 00:05:42 -0000
Love is blindness de U2, es una de mis canciones favoritas y me late que tenga tantas versiones, esta de Devlins y Sharon Shannon. Agasajo.
A Blind Our Motto - Directory of links and other resources for the blind.
Meta Description: [ Start finding out what blindness is and isn't by using the links on this page. ]
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AccessDome - Resources for the blind. A web portal designed to enhance vision impaired and print restricted access to the web.
Meta Description: [ Web accessibility and accessible web
page design are the focus of this portal. ]
Accessible Games - Portal for blind and visual impaired children. Accessible games, remixers and more. Make you own hompage for free with your screenreader.
Artificial Vision - Homepage - The Dobelle Institute (Portugal) Lda. announces development of an artificial vision system providing independent mobility to blind people.
Meta Description: [ Synthetic vision for the blind by means of an auditory display. ]
Blind BBS - a list for the discussion of issues concerning the blind
Meta Description: [ Yahoo! Groups offers free mailing lists, photo & file sharing, group calendars and more. Discuss hot topics, share interests, join online communities. ]
Blindness Emailing Lists - Subscribe to blindness-related emailing lists and pan-disability and access-issues lists directly from this comprehensive hypertext index.
Meta Description: [ Subscribe to over 225 blindness-related
emailing lists, and over 50 pan-disability and access-issues lists, directly
from this comprehensive hypertext index. A LookSmart Editor's Choice. ]
Blindness in Depth - Provides articles and links to information about the physical, emotional, social, and spiritual impact of blindness.
Meta Description: [ This site explores the various ways in which blindness affects a person's life: functionally, socially, emotionally, mentally, and spiritually. ]
Blindskills, Inc. - Offers solutions and answers to questions regarding blindness, visual impairment and vision loss.
Meta Description: [ Blindskills, a non-profit publisher, provides a bimonthly magazine and comprehensive information on blindness and coping with vision loss. ]
Community Services for the Blind and Partially Sighted - Provides assorted information and resources for visually impaired people.
Meta Description: [ Community Services for the Blind and Partially Sighted (CSBPS) works to restore, maintain and enhance the independence and well-being of people with impaired vision. ]
Empower Connection - Technology for the Blind - Information and help for people using assistive Internet technology.
Enablers for visually impaired young adults with learning difficulties - Resource and contact site for enablers working with visually impaired young adults with learning difficulties.
Envision - Flash presentation on the research at the Duke University Eye Center to eliminate blindness.
Kenneth Jernigan: 'power to the blind' - Article on the late director of the Iowa Commission for the Blind.
Meta Description: [ Kenneth Jernigan (1927-1998) Pioneer of freedom for the world's blind ]
Living with Vision Loss - If you are among the more than 10 million people in North America who are visually impaired, you know how important it is to find ways to accomplish routine daily tasks.
Meta Description: [ American Foundation for the Blind (AFB), a U.S. nonprofit organization enabling blind or visually impaired people to achieve equality and access. Provides information and referrals about living with visual impairment. Helen Keller devoted over 40 years of her life to AFB. ]
Louis Database - Database of accessible materials for people who are blind or visually impaired. Contains information about more than 145,000 titles of accessible materials, including braille, large print, sound recordings, and computer files from over 200 agencies throughout the United States.
Meta Description: [ Founded in 1858, The American Printing House for the Blind, Inc. (APH) is the world's largest company devoted solely to creating products for people who are blind and visually impaired. ]
Lowell Association for the Blind - LAB is a non-profit, community based organization dedicated to working with the blind and visually impaired. Serving the Greater Lowell, MA / Merrimack Valley community. Find the services, news, resources and contact details.
Meta Description: [ services for the blind and visually impaired in the Greater Lowell, Merrimack Valley and Southern N.H. ]
Modifying Games for the Blind - Tips on adapting board games with tactile markings, from adding Braille markings to playing cards or game tiles, to using glue to create raised lines on map boundaries.
Recording For The Blind and Dyslexic - Educational library for people with print disabilities, with a 77,000-title library of taped textbooks, reference and professional materials for people who cannot read standard print because of a disability.
RNIB - Charles Bonnet Syndrome - Characterized by visual hallucinations in people who have a sudden change in vision such as that brought on by macular degeneration or serious sight loss.
Savon Condition Center - A comprehensive information site including medical references and tools. [Only available in Internet Explorer and Netscape browsers]
SeebyTouch - The free of charge project, especially for the blind, provides a possibility to perceive pictures over the tactile sense - consisting of a picture transforming multi-platform software and a tactile display, built up easily with help of the construction manual.
Meta Description: [ SeebyTouch, kostenlose Software und Bauanleitung um Bilder am PC zu ertasten. ]
SensibleGraphics - Tactile Graphics for Blind and Visually Impaired - Information on tactile graphics for the blind and visually impaired. Graphic files free to download.
Meta Description: [ SensibleGraphics includes an archive of tactile and adapted graphics for visually impaired and blind. Graphic files are free to download. ]
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Talking Software - Offers a word speech enabled dictionary and thesaurus for blind users. All controls are designed with unsighted user in mind.
Meta Description: [ RWF Talking Software: speaking software products for blind and handicapped computer users. Bonus CD given away now with every Talking Dictionary CD purchase limited offer. ]
The Blind Readers Page - A source of information about books and reading, blindness and other disabilities and library services for the blind and physically handicapped.
The Eye - Includes what to do when meeting a person with vision impairment, the signs of vision loss, legal blindness, braille and other health related links.
The Voice - Translates images from a camera into sounds that one hears via stereo headphones and targetting vision substitution for the totally blind.
Meta Description: [ Synthetic vision for the blind by means of an auditory display. ]
V I P News - A voluntary site for daily updated links to related news stories from around the world.
Meta Description: [ Daily links to vision impairment related news from around the world, V.I.P. World News - Vision impairment & blindness stories from around the world ]
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VICUG-L - A visually impaired computer users' group list. Search the archives and join from this site.
Video Description by Narrative Television Network - Makes movies and television programming accessible to blind and visually impaired people through narration.
Meta Description: [ Narrative Television Network, an Emmy Award-winning TV network and source of descriptive video for network and station broadcasters. Narrative Television Network makes television, movies, home videos, live theatre and other events accessible to our nation's 13 million blind and visually impaired ... ]
Vis-Ability (DK) - Supplies electronic aids for the visually impaired.
Meta Description: [ Vis-Ability supplying electronic aids for visually impaired people since 1992 ]
VisionConnection - Vision information and an accessible community for people who are partially sighted or blind. Searchable database of resources, and articles.
Meta Description: [ Lighthouse International: a leading worldwide resource helps people overcome vision impairment through rehabilitation, education, research and advocacy. Non-profit organization offering consumer and professional information and services. The Lighthouse enables people with low vision and blindne... ]
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