News tagged with eye cells
Solar-panel-like retinal prosthesis could better restore sight to blind
(Phys.org) -- Using tiny solar-panel-like cells surgically placed underneath the retina, scientists at the Stanford University School of Medicine have devised a system that may someday restore sight to people ...
May 13, 2012 |
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Scientists solve mystery of the eye
(PhysOrg.com) -- Scientists have a good overall understanding of human vision: when light enters our eyes, it is focused by the lens and strikes the retina in the back of the eye. The light causes some of ...
Nov 17, 2011 |
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Sharp-eyed robins can see magnetic fields
(PhysOrg.com) -- It has been known for decades that some birds are able to sense the Earth's magnetic field and set their direction as if following a compass heading, which is an extremely useful ability for ...
Jul 09, 2010 |
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Stimulating sight: New retinal implant developed
(PhysOrg.com) -- Inspired by the success of cochlear implants that can restore hearing to some deaf people, researchers at MIT are working on a retinal implant that could one day help blind people regain a ...
Sep 23, 2009 |
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Funnel vision: New info about how cells in the eye help guide light into the retina
The eyes are marvelous instruments for converting outside reality into images lodged inside our brains. A new study of the retina, the light-sensitive region at the back of the eye, solves a mystery as to ...
May 09, 2010 |
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Researchers discover mechanism that helps humans see in bright and low light
Ever wonder how your eyes adjust during a blackout? When we go from light to near total darkness, cells in the retina must quickly adjust. Vision scientists at Washington University School of Medicine in St. ...
Medicine & Health / Neuroscience
Oct 13, 2009 |
4.9 / 5 (9) |
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Stem cells reverse blindness caused by burns
(AP) -- Dozens of people who were blinded or otherwise suffered severe eye damage when they were splashed with caustic chemicals had their sight restored with transplants of their own stem cells - a stunning ...
Medicine & Health / Medical research
Jun 23, 2010 |
5 / 5 (15) |
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Evolutionary bestseller in image processing
The eye is not just a lens that takes pictures and converts them into electrical signals. As with all vertebrates, nerve cells in the human eye separate an image into different image channels once it has been ...
Medicine & Health / Neuroscience
Nov 10, 2010 |
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Historic first images of rod photoreceptors in the living human eye
Scientists today reported that the tiny light-sensing cells known as rods have been clearly and directly imaged in the living eye for the first time. Using adaptive optics (AO), the same technology astronomers ...
Jun 08, 2011 |
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One-eyed filmmaker conceals camera in prosthetic
(AP) -- A one-eyed documentary filmmaker is preparing to work with a video camera concealed inside a prosthetic eye, hoping to secretly record people for a project commenting on the global spread of surveillance ...
Technology / Hi Tech & Innovation
Mar 11, 2009 |
4.5 / 5 (4) |
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New invisibility cloak hides objects from human view
For the first time, scientists have devised an invisibility cloak material that hides objects from detection using light that is visible to humans. The new device is a leap forward in cloaking materials, according to a report ...
Jul 27, 2011 |
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Small evolutionary shifts make big impacts, study finds
(PhysOrg.com) -- In the developing fetus, cell growth follows a very specific schedule. In the eye's retina, for example, cones -- which help distinguish color during the day -- develop before the more light-sensitive ...
May 20, 2009 |
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Scientists discover neurons that 'mirror' the attention of others
Whether a monkey is looking to the left or merely watching another monkey looking that way, the same neurons in his brain are firing, according to researchers at the Duke University Medical Center.
Medicine & Health / Neuroscience
May 18, 2009 |
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Researchers discover that changes in bioelectric signals cause tadpoles to grow eyes in back, tail
For the first time, scientists have altered natural bioelectrical communication among cells to directly specify the type of new organ to be created at a particular location within a vertebrate organism. Using ...
Dec 08, 2011 |
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Scientists offer new insights into early eye evolution
Scientists at the University of Hawaii at Manoa's Kewalo Marine Laboratory in Honolulu have discovered light-detecting cells in the embryo of a brachiopod, a marine invertebrate, whose organization may be similar to the primitive ...
Medicine & Health / Medical research
Mar 02, 2011 |
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