News tagged with human retina
Study uncovers clues to what makes anesthetics work
Physicians use inhalation anesthetics in a way that is incredibly safe for patients, but very little is known about the intricacies of how these drugs actually work in children and adults. Now, researchers have uncovered ...
Dec 22, 2011 |
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Nanometer-scale growth of cone cells tracked in living human eye
Humans see color thanks to cone cells, specialized light-sensing neurons located in the retina along the inner surface of the eyeball. The actual light-sensing section of these cells is called the outer segment, which is ...
Dec 20, 2011 |
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Terminator-style info-vision takes step towards reality
The streaming of real-time information across your field of vision is a step closer to reality with the development of a prototype contact lens that could potentially provide the wearer with hands-free information ...
Nov 21, 2011 |
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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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AMD-like lesions delayed in mice fed lower glycemic index diet
Feeding older mice a lower glycemic index (GI) diet consisting of slowly-digested carbohydrates delays the onset of age-related, sight-threatening retinal lesions, according to a new study from the Laboratory for Nutrition ...
Nov 14, 2011 |
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Human skin begins tanning in seconds, and here's how
We all know that human skin tans after days spent in the sun. That relatively slow process has known links to ultraviolet (and specifically UVB) exposure, which leads to tanning only after it damages the DNA of skin cells. ...
Nov 03, 2011 |
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Researchers develop optimal algorithm for determining focus error in eyes and cameras
University of Texas at Austin researchers have discovered how to extract and use information in an individual image to determine how far objects are from the focus distance, a feat only accomplished by human and animal visual ...
Technology / Computer Sciences
Sep 26, 2011 |
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Finding is a feather in the cap for researchers studying birds' big, powerful eyes
Say what you will about bird brains, but our feathered friends sure have us -- and all the other animals on the planet -- beat in the vision department, and that has a bit to do with how their brains develop.
Jun 23, 2011 |
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Can humans sense the Earth's magnetism?
For migratory birds and sea turtles, the ability to sense the Earth's magnetic field is crucial to navigating the long-distance voyages these animals undertake during migration. Humans, however, are widely assumed not to ...
Jun 21, 2011 |
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Researchers develop curious snapshot of powerful retinal pigment and its partners
Science fiction novelist and scholar Issac Asimov once said, "The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny.' " This recently rang true for an international ...
Feb 28, 2011 |
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Social scientist creates computer model to determine human perception of hues
Variations in how people perceive colors and how those same colors appear on TV, computers and other media have confounded broadcasters, Web designers and printers trying to reproduce lifelike hues.
Other Sciences / Social Sciences
Jun 29, 2009 |
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Protein-protein interaction explains vision loss in genetic diseases
The mystery of genetic disease is only partially solved with the identification of a mutated gene. Often, the pattern of disease - the features or disorders associated with it - vary in type and severity among those who are ...
May 10, 2009 |
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