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Retinal implants could restore partial vision By: Rachel Ehrenberg whitethorn 13, 2012 In lab tests on rat retinas, a photovoltaic chip seconds display images through special gawk. Specialized goggle that manoeuver information to solar celllike chips plant in the eyes may virtuoso day wait on some blind sight see. The new implants, which have been proved in rat retinas in a dish, would require critical invasive surgery than similar devices now being well-tried and offer a higher-resolution view of the world. The new system, reported online whitethorn 13 in Nature Photonics, still needs kindling before being tested in battalion. But one day it may return partial sight to people suffering from conditions such as retinitis pigmentosa, an inherited disease that theater lead to night blindness and tunnel vision, or macular degeneration, in which sharp central vision is lost but peripheral vision remains. In those conditions, vision suffers when light-colored-d etecting cells at the back of the interior eye ar damaged, even though the nerve cells that guide visual information to the brain may remain intact. No current treatments can restore vision for such retinal damage, says Lotfi Merabet, an eye specialist at Massachusetts Eye and atrial auricle in Boston. The new work is certainly very promising, he says.

Developing the implants took many years and many scientists, says study vocalise author James Loudin, an electrical engineer at Stanford University. The unsullied depend of new technologies that had to be developed its amazing, he says. For starters, the re are the goggles. A miniature video telev! ision camera sits on the nosepiece, watching the world. Information from the camera streams to a take-away data processor about the size of a smartphone. This electronic computer processes the video images, which are projected into the eyes by near-infrared lasers on the insides of the goggle lenses. The laser hits slender photovoltaic chips implanted to a lower place the retinas, which convert the light into electrical current, stimulating nerve cells that send...If you fatality to get a full essay, order it on our website: BestEssayCheap.com

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