Noun

Wikipedia has an article on: Blindness

Singular blindness

Plural uncountable

blindness (uncountable)

  1. The condition of being blind; unable to see.

Synonyms

Derived terms

From Wiktionary under the GNU Free Documentation License.
Wed Jun 17 00:23:47 2009

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. A person with only "light projection" can tell 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 vision correction—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 (RHT), so a damaged optic nerve beyond where the RHT exits it is no hindrance.

From Wikipedia under the GNU Free Documentation License
Wed Jun 10 19:18:32 2009

Lucid Dream Exit Blindness - 3 Fast Solutions When You Can t See ...
lucidology.com
Lucid Dream Exit Blindness - 3 Fast Solutions When You Can t See ...

admin

Fri, 19 Jun 2009 19:02:41 GM

The second disadvantage is exit . blindness. . Exit . blindness. happens a lot especially for new OBEers. When this happens you enter the dream and find that you are . blind. and so you can t see with or without the blindfold. ...

Jed Fielding's Photographs Shed New Light On Blindness - Chicagoist
chicagoist.com
Jed Fielding's Photographs Shed New Light On Blindness - Chicagoist

unknown

hu, 11 Jun 2009 05:00:00 GM

Jed Fielding's Photographs Shed New Light On . Blindness. . 2009_06_Fieldin​g.jpg photo by jed fielding. We're kicking ourselves for waiting so long to see the Cultural Center's exhibition of works by Chicago-based photographer Jed ...

We're shockingly bad at noticing changes even to familiar scenes ...
scienceblogs.com
We're shockingly bad at noticing changes even to familiar scenes ...

Dave Munger

Wed, 24 Jun 2009 20:37:50 GM

But Luke Rosielle and Jeffrey Scaggs point out that change . blindness. isn't much of a problem in the real world because things don't ordinarily disappear or change right in front of our eyes, or in the moment when we glance away. ...

From Google Blog Search: "blindness"
Wed Jul 1 05:54:47 2009

Olathe home teams - Kansas City Star
kansascity.com
Olathe home teams

Kansas City Star, MO

The walk is hosted by the Foundation Fighting Blindness , a national non-profit that funds research and clinical trials to cure blindness -causing retinal diseases. Pernice's 14-year-old daughter, Brooke, is this year's Youth Chair. ...
One person goes blind every five seconds in Pakistan - DAWN.com
dawn.com
One person goes blind every five seconds in Pakistan

DAWN.com, Pakistan

Reuters rawalpindi: Every five seconds a person goes blind in Pakistan, Al-Shifa Trust President Lt-Gen (retired) Jahan Dad Khan has said. Mr Khan was speaking at a function held to celebrate 20 years of eye care services by Al-Shifa Trust Eye ...

'One Pakistani goes blind every five minutes' Daily Times

all 2 news articles
Stem Cell Therapy Cures Corneal Blindness - Singularity Hub
singularityhub.com
Stem Cell Therapy Cures Corneal Blindness

Singularity Hub, CA

Two patients, previously legally blind , have regained functional eyesight, while the third, who could always read the biggest letters on an eye-exam chart, is once again able to drive. The improvement has already lasted for a full 18 months, ...

From Google News Search: "blindness"
Mon Jun 22 15:05:38 2009

type of blindness reported in some taking viagra jpg
health-news.org
type of blindness reported in some taking viagra jpg
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blog cannes blindness photocall 11 thumb jpg
mavrixonline.com
blog cannes blindness photocall 11 thumb jpg
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May 14 08 01 42 PM

blog blindness photocall cannes 09 thumb jpg
mavrixonline.com
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[source page]

The Cannes Film Festival is now underway and the city is filling up with the world s top stars Among the cast and crew attending the festival to promote the film Blindness are Julianne

From Yahoo Image Search: "blindness"
Thu Jul 2 09:46:08 2009

What kind of mutation is color blindness?
Q. I am doing a science project on color blindness and I need to know what kind of mutation it is like negative, positive, or neutral mutation. Links would be helpful or any info.
Asked by Ash Cash - Thu Dec 4 17:51:01 2008 - - 2 Answers - 0 Comments
Can men pass the the color blindness trait to their children?
Q. My friend and I have an argument on our hands and none of our old college text books. We are trying to figure out if a man can pass the color blindness trait onto their children, or if only women are carriers of the trait. Please let me know and perhaps provide where you got your information. Thanks in advance!
Asked by Miss Madison - Sat Dec 27 18:14:04 2008 - - 5 Answers - 0 Comments

A. LOL. Semantics, semantics. The man can pass his bad allele on to his girl children. Whether or not the girl actually has the trait depends on mom: If mom is normal, girl will be a carrier. If mom is carrier, girl may be carrier or girl may have trait (50-50). If mom is colorblind, girl will be colorblind. The man cannot pass his bad allele on to his boy children.
Answered by emucompboy - Sat Dec 27 18:40:08 2008

What is the word for partial and temporary blindness when coming inside out of the sun?
Q. Coming in from a bright, sunny outside and temporarily having blind spots in some areas, perhaps peripherally? What is the word for that?
Asked by Edvert F - Fri Oct 24 17:34:58 2008 - - 1 Answers - 0 Comments

A. Rod adaptation.
Answered by Andy - Fri Oct 24 17:52:08 2008

From Yahoo Answer Search: "blindness"
Wed Jul 1 04:37:07 2009

See also:

  • AccessDomeAccessDome
    accessdome.com
    Resources for the blind. A web portal designed to enhance vision impaired and print restricted access to the web.
  • Modifying Games for the BlindModifying Games for the Blind
    thegamesjournal.com
    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. (December, 2002)
  • Lowell Association for the BlindLowell Association for the Blind
    lowellassociationfortheblind.org
    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.
Custom search only blindness sites:

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Fri Jun 19 01:53:49 2009