Eye
hideEyes are organs that detect light, and send signals along the optic nerve to the visual and other areas of the brain[citation needed]. Complex optical systems with resolving power have come in ten fundamentally different forms, and 96% of animal species possess a complex optical system. Image-resolving eyes are present in cnidaria, molluscs, chordates, annelids and arthropods.
The simplest "eyes", such as those in unicellular organisms, do nothing but detect whether the surroundings are light or dark, which is sufficient for the entrainment of circadian rhythms. From more complex eyes, retinal photosensitive ganglion cells send signals along the retinohypothalamic tract to the suprachiasmatic nuclei to effect circadian adjustment.
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News tagged with eye
Researchers find new way to attack inflammation in Graves' eye disease
Nov 06, 2009 |
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A small group of patients with severe Graves' eye disease experienced rapid improvement of their symptoms — and improved vision — following treatment with the drug rituximab. Inflammation around their eyes and damage to the ...
Scientists obtain clearer view of how eye lens proteins are sorted
Nov 03, 2009 |
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New research reveals how proteins that are critical for the transparency of the eye lens are properly sorted and localized in membrane bilayers. The study, published by Cell Press in the November 3rd issue of Biophysical Jo ...
Two Retinal Imaging Display Devices at Prototype Stage
Electronics / Consumer & Gadgets
Oct 30, 2009 |
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(PhysOrg.com) -- NEC and Brother are both developing wearable prototype devices that use Retinal Imaging Display (RID) technology to project images directly on the wearer's retina. NEC's gadget is designed ...
Like mother, like daughter, at least around the eyes
Oct 28, 2009 |
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(PhysOrg.com) -- New research suggests the old saying commonly told to husbands-to-be is true, that if you want to know what your wife will look like, look at her mother.
No such thing as a break in a curveball?
Medicine & Health / Neuroscience
Oct 27, 2009 |
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The answer to the question of whose curveball breaks harder -- that of the Yankees' A.J. Burnett or the Phillies' Cole Hamels -- may be neither.
AMD drug and IOP; getting good eyeglasses to those in need
Oct 26, 2009 |
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A first-time finding of intraocular pressure increases in patients with no personal or family history of glaucoma following anti-VEGF treatment for wet age-related macular degeneration (AMD), and a report on a simple, low-cost ...
Reprogramming a patient's eye cells may herald new treatments against degenerative disease
Oct 22, 2009 |
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Scientists have overcome a key barrier to the clinical use of stem cells with a technique which transforms regular body cells into artificial stem cells without the need for introducing foreign genetic materials, which could ...
First in New York: Bionic technology aims to give sight to woman blinded beginning at age 13
Oct 21, 2009 |
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A 50-year-old New York woman who was diagnosed with a progressive blinding disease at age 13 was implanted with an experimental electronic eye implant that has partially restored her vision. A team led by Dr. Lucian V. Del ...
Watching me, watching you
Oct 21, 2009 |
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(PhysOrg.com) -- Software that tracks shoppers' eye movements as they browse supermarket shelves may seem a bit Big Brother, but the latest technology in 'eye-tracking', which monitors what grabs a person's ...
Experimental treatments restore partial vision to blind people
Medicine & Health / Neuroscience
Oct 20, 2009 |
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Two experimental treatments, a retinal prosthesis and fetal tissue transplant, restored some vision to people with blinding eye diseases. The findings, presented at Neuroscience 2009, the annual meeting of the Society for ...
Researchers find new mechanism for circadian rhythm
Oct 20, 2009 |
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Molecules that may hold the key to new ways to fight cancer and other diseases have been found to play an important role in regulating circadian rhythm, says Liheng Shi, a researcher in Texas A&M's Department of Veterinary ...
FDA to study negative effects of Lasik eye surgery
Oct 16, 2009 |
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(AP) -- The Food and Drug Administration announced plans Thursday to study the scope of problems connected with laser eye-correcting surgery, which include blurred vision and dry eyes.
Findings about veracity of peripheral vision could lead to better robotic eyes (w/ Video)
Oct 15, 2009 |
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Two Kansas State University psychology researchers have found that although central vision allows our eyes to discern the details of a scene, our peripheral vision is most important for telling us what type of scene we're ...
Bioluminescence imaging used for eye cancer detection
Oct 13, 2009 |
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At the moment, doctors rely on biopsy analysis to determine the progression of eye cancer. However, researchers now believe that a new technology, bioluminescence imaging (BLI), will allow doctors to detect tumors earlier ...
Researchers discover mechanism that helps humans see in bright and low light
Medicine & Health / Neuroscience
Oct 13, 2009 |
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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. ...
