Gourt > Health > Senses > Vision (10)
Visual perception is one of the senses, consisting of the ability to detect light and interpret (see) it. The resulting perception is known as eyesight, sight or naked eye vision. Vision has a specific sensory system, the visual system.
There is disagreement as to whether or not this constitutes one, two or even three distinct senses. Some people make a distinction between the "black and white" vision system and the color one, pointing out that they use completely different sets of photoreceptors (respectively rod cells and cone cells). Some argue that perception of depth also constitutes a distinct sense, but others persuasively argue that depth is just one of many pieces of information extracted from several visual cues (it is based on the stereoscopic effect of having two eyes, the relative size of objects, motion, etc). Many people are also able to perceive the polarization of light.
The visual system
The eye is a light-sensitive organ that is the first component of the visual system. Humans rely heavily on their vision - blindness has an enormous impact on their lives. Up to 90% of information obtained by humans is from their vision. This is why people with eye problems struggle more than other conditions of the other senses because seeing is so common that people take it for granted but the simple tasks of walking down the street or taking a bath seem much harder when you think about that you can't see what you're doing. When someone is blind however, their other senses become heightened to pick up the slack. The eye's retina turns light into neural impulses and even performs the first stages of processing on those signals, with the remaining stages of visual perception occurring in the optic nerve, the lateral geniculate nucleus, and the visual cortex of the brain. More on [ Visual perception ]
Ophthalmology
Light and Optics :: Education
Optics :: Physics
Vision Unveiled For âMosaic Of Habitatsâ In The New York/New Jersey Estuary http://bit.ly/89OZoF
DSchvejda (Dennis Schvejda) Wed, 16 Dec 2009 14:13:19 -0000
Vision Unveiled For “Mosaic Of Habitats” In The New York/New Jersey Estuary http://bit.ly/89OZoF
RT @VizWorld: Agilent brings NVidia 3D Vision to Maxwell's Equations http://bit.ly/581wFr ~overcoming design constraints
5Dcore (5D) Wed, 16 Dec 2009 14:12:47 -0000
RT @VizWorld: Agilent brings NVidia 3D Vision to Maxwell's Equations http://bit.ly/581wFr ~overcoming design constraints
Your vision will become clear only when you look into your heart. Who looks outside, dreams. Who looks inside, awakens...
abhijitme (Abhijit Das) Wed, 16 Dec 2009 14:12:34 -0000
Your vision will become clear only when you look into your heart. Who looks outside, dreams. Who looks inside, awakens...
Career Resources for the Blind: New Programs Let Low-Vision Students Explore Employment Options: http://bit.ly/5cGwNb
fredshead (fredshead from APH) Wed, 16 Dec 2009 14:12:30 -0000
Career Resources for the Blind: New Programs Let Low-Vision Students Explore Employment Options: http://bit.ly/5cGwNb
ããWIRED VISION è¦ããããã«ãªã£ã¦ããã½(´â½ï½)ã http://wiredvision.jp/ çµå±ãä»æè¦ããªãã£ãã®ã¯ä½ã ã£ããã ããï¼
akedon (akedon) Wed, 16 Dec 2009 14:12:04 -0000
お、WIRED VISION 見れるようになってる。ヽ(´▽｀)ノ http://wiredvision.jp/ 結局、今朝見えなかったのは何だったんだろう？
Vision News: Happy Birthday to Katie Gardner, missionary to Peru: Today is Katie Gardnerâs birthday. She is our ... http://bit.ly/5UFYr8
VisionBaptist (Vision Baptist) Wed, 16 Dec 2009 14:11:57 -0000
Vision News: Happy Birthday to Katie Gardner, missionary to Peru: Today is Katie Gardner’s birthday. She is our ... http://bit.ly/5UFYr8
Pathology of the Human Eye - Included are descriptions, functions, and problems of the major structures of the human eye.
Meta Description: [ Included are descriptions, functions, and problems of the major structures of the human eye: conjunctiva, cornea, iris, lens, macula, retina, optic nerve, vitreous, and extraocular muscles. A glossary is included. There also is a test for color deficiency and two short quizzes. ]
ADVISOR - Assisting the Development of Visually Impaired Students Through Online Resources. Find a discussion board, the history, directories and contact details.
All About Sunglasses - General information, designer styles, sports sunglasses and lens features. A buyer's guide to sunglass styles and features.
Meta Description: [ A guide to resources about sunglasses - styles, lens features, Rx sunglasses, and sunglasses for sports, teens and kids. ]
All About Vision - A consumer guide to vision, eye health and vision correction techniques.
Meta Description: [ Guide to eye care, LASIK laser eye surgery, eyeglasses, contact lenses, low vision, eye exams, computer vision syndrome, glaucoma, cataracts, macular degeneration, and other eye problems and diseases. ]
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Allexperts.com - Ophthalmologists and opticians answer your questions about eye care.
Meta Description: [ About AllExperts: expert guidance from real people helping to answer your questions ]
Anatomy of the Eye - Includes full color illustrations of the human eye and structures of the eye, and information about glaucoma.
Meta Description: [ XALATAN is a prescription drug used to lower eye pressure in people with high inner eye pressure or open-angle glaucoma. ]
Applied Vision Association - Promotes research work in all areas related to vision, with details of membership, and abstracts of scientific meetings. Based in the United Kingdom.
AskMen.com - Eyesight - Includes health information on testing a man's eyesight.
Meta Description: [ Eyesight- How good is your eyesight? ]
Bates Association for Vision Education - Information about the Bates Method for better eyesight without glasses. Discussion of multiple vision conditions and what can be done outside conventional treatment.
Meta Description: [ Learn about natural methods for better eyesight without glasses as developed by Dr. Bates... ]
Bemd.com - Information for eye patients and for pilots seeking medical certification.
Meta Description: [ bemd, Brett Elliott, Information for Eye Patients and for pilots seeking FAA Medical Certification for all classes, Web site creation services for physicians wanting to build web a web site ]
Check Yearly, See Clearly - Education campaign to encourage yearly eye exams, as well as vision care education and media resources for the public and eye care professionals.
Meta Description: [ Check Yearly is an educational initiative launched by the Vision Council Of America to encourage regular eye exams for your vision care! ]
ContrastSensitivity.net - Provides information on vision science, vision testing technology, contrast sensitivity, and functional vision.
Cooperative Research Centre for Eye Research and Technology - Participants from several fields contribute to this project to improve visual correction technology. Includes details of research and education activities. Based at the University of New South Wales, Australia.
Meta Description: [ CRCERT is a cooperative research centre committed to advancing ocular research and education, by fostering long term, high quality programs of scientific and technological research which will contribute to the economic and social development of Australia, and to international ocular health; and p... ]
Eye GK - Provides information about the eye, its working, its structure and eye problems.
Meta Description: [ Eye General Knowledge ]
Eye Search - Comprehensive source of information about vision and the eye.
Eye surgery in the UK - Laser eye treatment technology makes it possible for people to achieve
clearer vision without the need for spectacles or contact lenses. The London
Vision Clinic is committed to providing the highest possible level of patient
care.
Eye surgery in the UK - Laser eye treatment technology makes it possible for people to achieve
clearer vision without the need for spectacles or contact lenses. The London
Vision Clinic is committed to providing the highest possible level of patient
care.
Eyecare India - Information about eye anatomy, problems, vision correction, and other topics for patients.
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Eyesight, An Insight - Interactive website designed to teach people about the human eye.
Eyewear Information - Information on eye health, vision correction techniques, equipment, and care for the eyes.
Icare4u - Resources and links to credentialed information.
Imagination blindness - Nonprofit, informational site dedicated to the Bates Method of vision education, a method to restore eyesight naturally, without surgery, drugs, or glasses.
Meta Description: [ Bates Method of vision improvement, discovered by William Horatio Bates, M.D., in the early 20th century. Articles, books, and other resources. ]
Independent Eye Care - Bausch Lomb sponsored site about contact lenses.
Meta Description: [ i-care is your assurance of excellence in contact lens fitting, knowledge and care ]
Lea-Test Ltd. - Comprehensive details for professionals and patients about vision testing in adults and children. Includes videos, games, and information on diseases. [Multiple languages.]
Meta Description: [ Information on Lea Vision Test System for
children and adult persons. Instructions for parents, educators and doctors on
how to test and assess normal and low vision. ]
MyEyeNet - Directory of websites relating to all aspects of vision and eye health.
Meta Description: [ We are dedicated to setting the standard for Link Directory technology and how individuals find vision related information. Over 2000 consumer and professional links with topics ranging from Contact Lenses to LASIK surgery. The Web's most comprehensive source for eyecare information. ]
National Eye Institute - Official web site for this agency, one of the United States government's National Institutes of Health (NIH).
Natural Vision Improvement - Offers courses on how to improve your eyesight with a modern approach to the Bates method in Cambridgeshire, UK.
Natural Vision Improvement and The Alexander Technique - A process for improving vision based on the principles of this century-old method of posture improvement.
RetinaCentral - Genetics, diseases and anatomy of the human retina. Includes links to related resources.
Meta Description: [ Klinik und Poliklinik für Neurologie der Universität Regensburg ]
Stanford Vision and Imaging Science and Technology - Research activities span topics in the areas of human visual sensing and electronic imaging.
Vision 3D - Information site about eye teaming and vision therapy.
Meta Description: [ 3-D eye exercises, games, puzzles, eye training, vision therapy, visual perception, binocular vision, depth perception, Magic Eye 3D ]
Vision Screening for Kids - Discussion of pediatric vision screening, with recommendations about how your child's vision can be tested.
Meta Description: [ Regular vision screening for children can help detect and prevent complications from common eye problems, including strabismus, amblyopia, and refractive errors. Learn about recommendations for Pediatric vision screening and how your child's vision can be tested. ]
Vision Works, Inc. - Alternative eye care site with detailed nutritional protocols and prevention to help preserve vision.
Meta Description: [ These ebooks are the consumers complete guide to alternative treatment options and home self-help techniques for macular degeneration, glaucoma, cataracts, dry eyes, computer eye syndrome & other internal and retinal conditions ]
VisionSite - Directory of vision care professionals, and information on vision health and conditions.
Vutest.com - An interactive vision screening test for computer users. Results available for a fee from the United Kingdom.
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