News tagged with eye
Robert Greenberg got tired of hearing from senior engineers that it wasn't possible to build his product idea: a bionic eye that gives sight to the blind. "A lot of the folks straight out of school didn't know any better, ...
Medical research May 06, 2013 | 5 / 5 (6) | 1
People have long taken for granted that glasses and contact lenses improve vision for nearsightedness, but the genetic factors behind the common condition have remained blurry. Now researchers at Duke Medicine ...
Genetics May 02, 2013 | 5 / 5 (2) | 2 |
A small ensemble of musicians can produce an infinite number of melodies, harmonies and rhythms. So too, do a handful of workhorse signaling pathways that interact to construct multiple structures that comprise ...
Medical research May 14, 2013 | 5 / 5 (2) | 0 |
Adding omega-3 fatty acids did not improve a combination of nutritional supplements commonly recommended for treating age-related macular degeneration (AMD), a major cause of vision loss among older Americans, ...
Ophthalmology May 06, 2013 | 3 / 5 (2) | 0 |
A new class of drug targeting skin cancer's genetic material has been successfully tested in humans for the first time, opening the way to new treatments for a range of conditions from skin cancers to eye ...
Cancer May 07, 2013 | 5 / 5 (1) | 0
Discovery of gene mutation causing Sturge-Weber syndrome, port-wine stain birthmarks offers new hope
In new findings published on May 8, 2013 in the New England Journal of Medicine (Epub ahead of print), researchers from the Kennedy Krieger Institute reveal the discovery of the cause – a genetic mutation that occurs before ...
Genetics May 08, 2013 | 5 / 5 (1) | 0
Cone receptors in the human eye lose their color sensitivity with age, but our subjective experience of color remains largely unchanged over the years. This ability to compensate for age-related changes in color perception ...
Cardiology May 08, 2013 | 5 / 5 (1) | 0
(Medical Xpress)—Exposure to sunshine as a small child is crucial to the development of a healthy eye according to results of long-term myopia study conducted by University of Sydney researchers.
Ophthalmology May 21, 2013 | 5 / 5 (1) | 0
Eyes are organs that detect light, and send signals along the optic nerve to the visual and other areas of the brain. 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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