NounWikipedia has an article on: BlindnessSingular blindness Plural usually uncountable; plural blindnesses blindness (usually uncountable; plural blindnesses)
Synonyms
Derived termsFrom Wiktionary under the GNU Free Documentation License. Blindness is the condition of lacking visual perception due to physiological or neurological factors. Various scales have been developed to describe the extent of vision loss and define blindness. Total blindness is the complete lack of form and visual 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. Those described as having only light perception have no more sight than the ability to tell light from dark and the general direction of a light source. 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 blindness. 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 (6.1 m) from an object to see it—with corrective lenses—with the same degree of clarity as a normally sighted person could from 200 feet (61 m). 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, have no vision. The rest have some vision, from light perception alone to relatively good acuity. Low vision is sometimes used to describe visual acuities from 20/70 to 20/200. 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 (20/60), but equal to or better than 3/60 (20/400), 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 (20/400), or corresponding visual field loss to less than 10 degrees, in the better eye with best possible correction. It should be noted that blind people with undamaged eyes may still register light non-visually for the purpose of circadian entrainment to the 24-hour light/dark cycle. Light signals for this purpose travel through the retinohypothalamic tract, so a damaged optic nerve beyond where the retinohypothalamic tract exits it is no hindrance. From Wikipedia under the
GNU Free Documentation License What are any and all causes for canine blindness? Q. Roamy was diagnosed with acute blindness in Oct 06. Teams of Ophthalmologists, Neurologists, and Internalists have examined her. Extensive blood work, an MRI, and CSF Analysis have been performed. The MRI revealed lesions (or possibly fluid-filled cysts) in her brain. The Specialists have assured me the lesions have nothing to do with her blindness. I am making a list of every reason for canine blindness so I can compare it against tests already conducted. She is 8 years old - spayed female - mixed breed - 118 lbs (most of which has been gained in the last 3 months while on Prednisone). Her condition first presented in Sep 06 as clear nasal/eye discharge and shuddering through the shoulders with lethargy. She started having Grand Mal… [cont.] Asked by Help for Roamer - Sun Feb 4 11:18:15 2007 - - 3 Answers - 0 Comments A. Causes of blindness & vision loss there are numerous causes of ocular problems and blindness in dogs. Some of the causes are congenital while others are non hereditary in nature. Some of the more common and serious canine eye disorders are: Glaucoma: Glaucoma is a disease which results in an increase in the fluid pressure within the eye. It is painful and can result in permanent blindness. This disease can be genetically inherited (primary glaucoma) or it can be the result of injury, of functional diseases, of cancer or of infections of a bacterial, viral or even fungal nature (secondary glaucoma.) Cataracts: As with glaucoma, cataracts can be genetically inherited or caused by disease, infections or injury. A normally transparent… [cont.] Answered by cyanosis - Sun Feb 4 11:25:02 2007 How to prove somebody is faking color blindness? Q. How do i prove that somebody is faking color blindness for attention. i know he's faking because he will see green as gold... but only on some days. He just good at improvising. Asked by KINGS77 - Fri Mar 6 23:32:42 2009 - - 2 Answers - 0 Comments A. my nephew is color blind to green, but its not just green period, its when its next to or in between other colors. (Color blindness doesn't really work like that, they don't typically see one color as another, they usually don't see it at all when its combined w/other colors. For example, many color blind ppl cant see fuscia which is a combination of red,wh, yellow & blue. they see hot pink (red, wh, blue.) To mistake green for gold is a feat. Green is yellow & blue, so if he were color blind yellow he's see blue, if he were color blind blue he'd see yellow, but gold is a hue formed from the presence of yellow & red. I would imagine if he were being honest he's color blind blue (which is extremely rare) and he'd actually be seeing a… [cont.] Answered by jjohnson94107 - Sat Mar 7 00:39:30 2009 In Judeo-Christian mythology, why did the Jesus charachter cure a blindman instead of curing blindness?
Q. I don't wish to be offensive with this question, apologize if it did. Why cure a blind man and give him sight instead of curing blindness for all blind people? Asked by Bad Robot - Sun May 31 20:44:47 2009 - - 7 Answers - 0 Comments A. I guess their god couldn't do something after all. Answered by Blue Foots - Sun May 31 21:17:48 2009 From Yahoo Answer Search: "blindness" Research Park affiliate receives grant to create software for the blind
The Exponent A West Lafayette Purdue Research Park affiliate has received a grant to create audio-based software for the blind . ... and more » 'Eye is very suitable for gene therapy'
Times of India It's a long time before we find a cure for genetic blindness , but a beginning has been made. University College of London has found vision improvements in ... and more » Columbian student raising money for scholarship fund
Tiffin Advertiser Tribune He has Usher syndrome, which the Usher Syndrome Foundation Inc. describes as being the leading cause of combined blindness and deafness worldwide. ... From Google News Search: "blindness" color blindness test 4 s500x428 13797 580 jpg
428px x 500px | 127.00kB [source page] Before we proceed onto our next example here is a little history lesson The English chemist John Dalton published the first scientific paper on the subject in 1798 Extraordinary facts Blindness A Ciegas 2008
913px x 400px | 76.00kB [source page] Descargar Winavi+Serial Capturas descargar 01 03 02 03 From Yahoo Image Search: "blindness" Spilling Blindness on the Seat of a Bus Nicole Rigets' Blog
nicolerigets Sun, 28 Feb 2010 21:32:46 GM Spilling . Blindness. on the Seat of a Bus. In Writing on February 28, 2010 at 9:32 pm. Excerpt from My Journal May 16th, 2009. Tucked into these sheets everything feels more comforting. Spilling over into this beautiful book with French ... Phrynoderma and night blindness Murthy SR, Prabhakaran VC - Indian ...
Murthy Sowmya Raveendra, Prabhakaran Venkatesh C Sun, 28 Feb 2010 03:50:08 GM Phrynoderma is traditionally considered to be a skin manifestation of vitamin A deficiency as is night . blindness. in the eye. However, most recent investigators deny the link between phrynoderma and vitamin A and the association between ... New gene discovery could help to prevent blindness | Life Sciences ...
Alfie Mon, 15 Feb 2010 08:38:04 GM Story Summary: The international research team led by the University of Leeds found that the TSPAN12 gene is faulty in patients with a disease known as FEVR. From Google Blog Search: "blindness" From Wikiquote under the GNU Free Documentation License.
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Community Services for the Blind and Partially Sighted
Recording For The Blind and Dyslexic
Louis Database