Geometry.Net - Basic

Color Blindness Tests, Charts, Posters And Books At The Color Vision Store - All
Offers products on color blindness diagnosis and educational materials on color blindness.
http://www.colorblind.to

Extractions: We have color blind related products that you just can't find anywhere else. From the popular Color Vision Guide (currently discounted) to the comprehensive "Little Black Book," as well as the critically acclaimed book, "Colour Blindness Causes and Effects"; we have what everyone needs to know about color-blindness. We even have original color blind test images you can license for your own publications.
318. On His Blindness. John Milton. The Oxford Book Of English Verse
John Milton. 16081674. 318. On His blindness. WHEN I consider howmy light is spent, E're half my days, in this dark world and wide,,
http://www.bartleby.com/101/318.html

Extractions: Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia World Factbook Columbia Gazetteer American Heritage Coll. Dictionary Roget's Thesauri Roget's II: Thesaurus Roget's Int'l Thesaurus Quotations Bartlett's Quotations Columbia Quotations Simpson's Quotations English Usage Modern Usage American English Fowler's King's English Strunk's Style Mencken's Language Cambridge History The King James Bible Oxford Shakespeare Gray's Anatomy Farmer's Cookbook Post's Etiquette Bulfinch's Mythology Frazer's Golden Bough All Verse Anthologies Dickinson, E. Eliot, T.S. Frost, R. Hopkins, G.M. Keats, J. Lawrence, D.H. Masters, E.L. Sandburg, C. Sassoon, S. Whitman, W. Wordsworth, W. Yeats, W.B. All Nonfiction Harvard Classics American Essays Einstein's Relativity Grant, U.S. Roosevelt, T. Wells's History Presidential Inaugurals All Fiction Shelf of Fiction Ghost Stories Short Stories Shaw, G.B. Stein, G. Stevenson, R.L. Wells, H.G. Verse Anthologies Arthur Quiller-Couch The Oxford Book of English Verse ... BIBLIOGRAPHIC RECORD Arthur Quiller-Couch, ed. 1919. The Oxford Book of English Verse: John Milton.
Western Australian Retinitis Pigmentosa Foundation
Chat room, links, information and support on retinal disorders and fighting blindness.
http://members.iinet.net.au/~warpf/index.html

Extractions: The retina, located in the back of the eye, is the part of the eye that acts like the film in a camera. It is a delicate layer of cells which picks up the picture and transmits it to the brain - where "seeing" actually occurs. In RP, the retina begins to degenerate, which causes vision to diminish. RP bodies throughout the world support research in a number of medical centres and hospitals internationally to find the cause, prevention and treatment of retinal degenerative diseases like Retinitis Pigmentosa, Usher syndrome and Macular Degeneration. Some of these centres also provide a clinical evaluation of the patient's RP or other retinal degenerations. They may also perform special tests requested by the patient's own ophthalmologist. Through the efforts of RP organisations in many countries, the number of highly qualified investigative scientists working full time on RP and related diseases continues to grow. Research efforts into these types of retinal diseases are difficult because there is no opportunity to safely biopsy - that is, remove and examine living retinal tissue under a microscope - the delicate eye.
Overview On Deaf-Blindness
DBLINK. The National Information Clearinghouse On Children Who Are Deaf-Blind.Overview on Deaf-blindness. July 2000 Revised. What Is Deaf-blindness?
http://www.tr.wou.edu/dblink/ovrview2.htm

Extractions: DB-LINK Home About DB-LINK DB-LINK Publications DB-LINK Databases ... Search the DB-LINK Website The National Information Clearinghouse On Children Who Are Deaf-Blind Barbara Miles Barbara Miles is a communication specialist/consultant and teacher, experienced with all ages and levels of persons who are deaf-blind. She has taught regional, national and international seminars on communication issues for children who are deaf-blind. Her articles have been published in the Journal of Vision Impairments and Blindness, Deafblind Education, and regional newsletters. July 2000 Revised A person who is deaf-blind has a unique experience of the world. For people who can see and hear, the world extends outward as far as his or her eyes and ears can reach. For the young child who is deaf-blind, the world is initially much narrower. If the child is profoundly deaf and totally blind, his or her experience of the world extends only as far as the fingertips can reach. Such children are effectively alone if no one is touching them. Their concepts of the world depend upon what or whom they have had the opportunity to physically contact. Who Is Deaf-Blind, and what are the Causes of Deaf-Blindness?
Overview On Deaf-Blindness
The National Information Clearinghouse on children who are deafblind.Category Health Conditions and Diseases Deafblindness Overview on Deafblindness. Barbara Miles July 2000 Revised. What Is Deaf-blindness?It may seem that deaf-blindness refers to a total inability to see or hear.
http://www.tr.wou.edu/dblink/overview.htm

Extractions: Search the DB-LINK Website Barbara Miles Barbara Miles is a communication specialist/consultant and teacher, experienced with all ages and levels of persons who are deaf-blind. She has taught regional, national and international seminars on communication issues for children who are deaf-blind. Her articles have been published in the Journal of Vision Impairments and Blindness, Deafblind Education, and regional newsletters. July 2000 Revised A person who is deaf-blind has a unique experience of the world. For people who can see and hear, the world extends outward as far as his or her eyes and ears can reach. For the young child who is deaf-blind, the world is initially much narrower. If the child is profoundly deaf and totally blind, his or her experience of the world extends only as far as the fingertips can reach. Such children are effectively alone if no one is touching them. Their concepts of the world depend upon what or whom they have had the opportunity to physically contact. Who Is Deaf-Blind, and what are the Causes of Deaf-Blindness?
Duke University Eye Center > ENVISION A World Without Blindness!
Flash presentation on the research at the Duke University Eye Center to eliminate blindness.
http://www.dukeeye.org/envision/index.html
The Strange Symptoms Of Blindness To Motion
Learn more about how humans see, how the eye works, color blindness, and more. HowWe See Things That Move. The Strange Symptoms of blindness to Motion.
http://www.hhmi.org/senses/b210.html

Extractions: The patient had great difficulty pouring coffee into a cup. She could clearly see the cup's shape, color, and position on the table, she told her doctor. She was able to pour the coffee from the pot. But the column of fluid flowing from the spout appeared frozen, like a waterfall turned to ice. She could not see its motion. So the coffee would rise in the cup and spill over the sides. More dangerous problems arose when she went outdoors. She could not cross a street, for instance, because the motion of cars was invisible to her: a car was up the street and then upon her, without ever seeming to occupy the intervening space. Even people milling through a room made her feel very uneasy, she complained to Josef Zihl, a neuropsychologist who saw her at the Max Planck Institute for Psychiatry in Munich, Germany, in 1980, because "the people were suddenly here or there but I did not see them moving." The woman's rare motion blindness resulted from a stroke that damaged selected areas of her brain.
ASU-Ask A Biologist
Colour tests for eyes with or without colour blindness.
http://askabiologist.asu.edu/research/seecolor/colortest.html

Extractions: Color Test One Look at the pictures below. Do you see a puzzle piece in the picture on the left? If you do, you have normal color vision. The picture on the right will give you an idea of how the color picture would look to someone that is totally color blind. It is the same picture using shades of grey. Without the colors as a reference the image in the picture disappears. It is very rare to be totally color blind. In fact, the most common form of color blindness is red/green color blindness. Approximately nine percent of the population are affected. Those that suffer from red/green color blindness would see the color image above as either all red or all green. The color they see depends on which rods they are missing. Green Deficient Red Deficient Color Test Two If you have normal color vision, here is another interesting test. First stare at the color picture below and then move the mouse pointer on top to switch the image to the black and white version. If you look carefully you will notice the image will briefly be in the opposite color! This is because you wore-out some of your cones and are now seeing the image with whatever cones are still operating.
Color Blindness: More Prevalent Among Males
Learn more about how humans see, how the eye works, color blindness, and more. Breakingthe Code of Color Color blindness More Prevalent Among Males,
http://www.hhmi.org/senses/b130.html

Extractions: color blindness , but it affects only .4 percent of women. The fact that color blindness is so much more prevalent among men implies that, like hemophilia, it is carried on the X chromosome, of which men have only one copy. (As in hemophilia, women are protected because they have two X chromosomes; a normal gene on one chromosome can often make up for a defective gene on the other.) Nathans himself is not color-blind. Before using his own DNA, he thoroughly tested his color vision to ensure that it was normal. Nevertheless, one of his initial findings presented a puzzle: Lying head to tail along his X chromosome were not just the two genes for the red and green receptors, but also an extra copy of the green receptor gene. Here was the explanation for the prevalence of color blindness, he realized. Because the DNA sequences of the red and green receptor genes are so similar, and because they lie head to tail, it is easy for mistakes to occur during the development of egg and sperm, as genetic material is replicated and exchanged between chromosomes.
Trachoma
Brief, technical clinical definition. Leading cause of blindness worldwide, and afflicts over 400 million people; preventable with adequate diet, proper sanitation, and education.
http://www.spedex.com/resource/documents/veb/trachoma.html

Extractions: TRACHOMA DESCRIPTION: A form of bilateral keratoconjunctivitis which causes corneal scarring; at its onset, it resembles conjunctivitis with symptoms of tearing, photophobia, pain, swelling of the eyelids, and superior keratitis; as it passes through four stages, the conjunctival tissues become follicular, heal, and finally scar. Lacrimal glands and ducts are often affected as well; the upper lid may turn inward and the lashes then abrade the cornea; corneal ulceration results, becomes infected, and ultimately scars. When scarring is extensive, blindness results. The disease is spread by contact; flies and gnats may also transmit it. TREATMENT: If treated early (with antibiotics, usually tetracycline drugs or sulfonamides), the prognosis is excellent. Untreated, it can cause blindness. IMPLICATIONS: This disease is one the earliest recorded eye diseases; it was identified as early as the 27th century B.C. It is the leading cause of blindness worldwide, and afflicts over 400 million people (primarily in underdeveloped countries in Africa, the Middle East, and Asia). It is preventable with adequate diet, proper sanitation, and education. It is rare in the United States. Back to Contents or Back to SpEdEx Home
Inattentional Blindness: An Overview By Arien Mack & Irvin Rock
attention. 8. Inattentional blindness. A perceived? These and other questionsset our research agenda. 10. Inattention blindness at Fixation. The
http://psyche.cs.monash.edu.au/v5/psyche-5-03-mack.html

Extractions: http://psyche.cs.monash.edu.au/v5/psyche-5-03-mack.html KEYWORDS: vision, attention, perception, consciousness, inattentional blindness. CHAPTER ONE of Arien Mack and Irvin Rock (1998) Inattentional Blindness. Cambridge, MA: MIT Press. What is the relationship between attention and perception? How much, if anything, of our visual world do we perceive when we are not attending to it? Are there only some kinds of things we see when we are not attending? If there are, do they fall into particular categories? Do we see them because they have captured our attention or because our perception of them is independent of our attention? Most people have the impression that they simply see what is there and do so merely by opening their eyes and looking. Of course, we may look more closely at some things than at others, which is what we ordinarily mean by "paying attention," but it probably seems to many people as if we see nearly everything in our field of view. There is an opposite experience that also raises questions about the relation between perception and attention. When we are intently awaiting something, we often see and hear things that are not there. For example, many people have had the experience of hearing footsteps or seeing someone who is anxiously awaited even though theperson is not there, and there are no footsteps. On these occasions, it is as if our intense expectation and riveted attention create or at least distort a perceptual object. Here, instead of not seeing (or hearing) what is there when we are distracted, we are seeing (or hearing) what is not there, or perhaps more accurately, misperceiving what may actually be there, but which we are anxiously awaiting. Both experiences appear to implicate attention in the act of perceiving. This kind of experience was eloquently described by William James.
VOILA Technology, Inc. Assistive Technology, Training, & Section 508 Consulting.
Provider of assistive technology and services for people suffering from macular degeneration and blindness.
http://www.mainaccess.com/

Extractions: Welcome to VOILA Technology, Inc. Provider of assistive technology and services for people suffering from macular degeneration, blindness, a learning disability or other disabilities. We are currently updating this site. WOW! Wait until you see what is coming! Keep checking back. Thank you. Check out our Next To New Sale!
Retinitis Pigmentosa
One page article on RP, inheritance, symptoms, diagnosis, progression, blindness and treatment from John Hopkins.
http://www.jhsph.edu/pubaffairs/Follower/ERwork/er-eye.htm
What Is Blindness?
* DECEMBER 2002 *. Legal blindness is visual acuity of not greater than 20/200 inthe better eye with best correction or a visual field of less than 20 degrees.
http://www.nib.org/blindness.htm

Extractions: NIB's Internal Newsletter D E C E M B E R Legal blindness is visual acuity of not greater than 20/200 in the better eye with best correction or a visual field of less than 20 degrees. Legal blindness can mean tunnel vision, no central vision, cloudy or extremely blurred vision , seeing just shadows, or no vision at all. What does 20/200 mean? A person with normal visual acuity can see an object clearly, at 200 feet ; a legally blind person must be 20 feet or closer to see the same object. Many different types of visual impairments are caused by conditions such as diabetes, retinitis pigmentosa, cataracts, and macular degeneration. Blind people succeed in the workplace because of access technology, special fixtures and equipment that compensate for various types of visual loss. Low vision devices are also instrumental in maximizing residual vision, not only for work, but also for other aspects of life. Some low vision solutions involve only a hand-held magnifier, the introduction of increased lighting or an adjustment of the background against which a person is working.
Cryotherapy For Devastating Eye Disease
April 14, 1996 article about cryotherapy to prevent blindness in children with severe retinopathy of prematurity (ROP), from the Children's Hospital of Philadelphia.
http://www.kidsource.com:80/kidsource/content/news/opth.pr.4.29.html

Extractions: PHILADELPHIA, April 14, 1996 In a companion study to the National Eye Institute's clinical investigation of cryotherapy to prevent blindness in children with severe retinopathy of prematurity (ROP), Ophthalmologists at The Children's Hospital of Philadelphia have determined that children with severe ROP who received the surgical intervention had an approximate 10 percent loss of peripheral or side vision in their treated eye. This pilot study is the first long-term study of its kind and appears in the April issue of Archives of Ophthalmology. "We followed 8 preterm patients who received cryotherapy at approximately 12 weeks of age," said Graham E. Quinn, M.D., Associate Surgeon, Division of Ophthalmology at The Children's Hospital of Philadelphia. All of the babies enrolled received cryotherapy in one eye, leaving the other eye to serve as a control. Dr. Quinn and his associates at Philadelphia's Children's Hospital and Wills Eye Hospital then followed the patients, testing their vision on an annual basis. "Today, the children are able to see and read letters," said Dr. Quinn. "However, in a test of the child's ability to detect an object off to the side while the child looked straight ahead, we found a deficit in peripheral vision of approximately 10 percent," Dr. Quinn said.
Internetworking (1.3): Article-Banner Blindness
their goal. We have dubbed this phenomenon banner blindness and haveinvestigated it in two experiments. Experiment 1 The purpose
http://www.internettg.org/newsletter/dec98/banner_blindness.html

Extractions: Rice University Suppose you are designing a web page where one particular link among many is likely to be the most used by visitors. For example, perhaps you have a web page for sending text messages to pagers. "Send a message" is likely to be a very popular link, and it is important that all users notice it. On a travel reservations page, the designer wants to be sure that users notice the link for "make a reservation." Web guidelines usually recommend that to make an important item stand out, it should be near the top, and be large and/or brightly colored. For example, the Ameritech web design guidelines state: "In general, the larger an item is, the greater its perceived visual importance and likelihood of attracting attention. Make sure that items of greatest importance are easy to see, and clearly distinguished from other items. (Detweiler & Omanson, 1996)" Although this seems like perfectly good design advice, we have reason to believe it may not be. In a usability test of a corporate intranet, we were interested in finding out whether the novice users could make their way easily from the main home page to a lower-level page on computer training courses. We gave the users the task of finding information about Internet courses. The training page contained the seemingly highly-salient link shown below.
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.
http://blindreaders.info/

Extractions: THE BLIND READERS' PAGE This site is a guide to sources of information in alternative formats (braille, recorded cassettes, large print, e-texts, web audio) accessible by people with print disabilitiesthose with visual and physical handicaps as well as dyslexia. It is also a guide to information about blindness, visual handicaps and other physical handicaps, with a special collection of Wisconsin resources. There are about 2,300 individual links, all evaluated, annotated and organized by subject. RELIGION: CHURCHES, SERVICES, SCRIPTURES, DEVOTIONS
The Blindness Foundation
Curing blindness in SE Asia ,THE blindness FOUNDATION benefits the poor with provenresults in Orphan Children,AIDS Research elderly blind with cataracts.
http://www.blindcure.com/
Severity Of Colorblindness Varies
An article about the severity of color blindness.
http://healthlink.mcw.edu/article/999211295.html

Extractions: Subscribe now >> Colorblindness is the inability to distinguish hues that are seen as different by people with normal color vision. There are several types of colorblindness and the severity of the condition varies from individual to individual. Sometimes known as color-vision deficiency, it affects one of every 12 men and one of every 230 women. There are an estimated nine million colorblind people in the US. It is more common in Caucasians than other ethnic groups. The degree of color-vision deficiency varies from nearly normal to severely impaired color vision. The two most common varieties of colorblindness are red-green and blue-yellow. Red-green color-vision deficiencies are nearly 1000 times more common than blue-yellow ones. People with normal color vision can distinguish more than 100 "hues." Colors may vary in brightness or saturation but still be of the same hue; pastel green and dark green are of the same hue, for example. On the other hand, people with the most severe forms of red-green colorblindness, called "dichromats," see only two hues. These hues may best be described by what people with normal color vision call blue and yellow.
BUBL LINK / 5:15 Internet Resources: Blindness
Author William Graczyk Subjects blindness DeweyClass 362.4 ResourceType indexLocation usa Last checked 20001110 blindness Resource Centre Documents and
http://bubl.ac.uk/link/b/blindness.htm

Extractions: BUBL LINK / 5:15 Catalogue of Internet Resources Home Search Subject Menus A-Z ... About See also: eyes A-Z Index Titles Descriptions Betsie: BBC Education Text to Speech Internet Enhancer Blind Readers Page Blindness Resource Centre Braille It ... Topica: Health Page last updated: 17 March 2003 Comments: bubl@bubl.ac.uk Betsie: BBC Education Text to Speech Internet Enhancer Betsie is software (a Perl script) which is intended to make it easier for people using text to speech systems for Web browsing. It rearranges the content of Web pages, renders text in a large, clear font, makes all frames horizontal, removes all table related tags, removes Javascript, and carries out numerous other operations. Most BBC pages are accessible via Betsie, but results from other pages are less reliable. Last checked: Blind Readers Page Listing of information sources for the blind which offer material in a range of formats such as Braille, recorded cassettes, large print, and electronic texts. Also features links to national organisations, adaptive computer technology suppliers, government agencies, information on guide dogs and mobility, audio books, tactile maps and graphics, and greeting cards.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

81-100 of 171 Back | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Next 20