A group of American scientists have given avisually-impairedgrandmother a chance to see her grandchildren danceand play football.
Linda Moorfoot, who suffers from the eye conditionretinitispigmentosa that causes blindness, is thrilled afterhaving part of hersight restored by a bionic eye.
The new invention is a tiny camera that scientistshope to actuallyinsert into the eye within the next five years.
The new technology tested by Moorfoot uses an externalcamera worn ona pair of dark glasses. The camera sends images to aradio receiverimplanted near the eye, which transmits a signal on toa tiny siliconand platinum chip that sits on the retina.
This information then goes down the optic nerve intothe brain.
Scientist Dr Mark Humayun has developed a small andpowerful camerathat could be implanted inside a patient's eye, ratherthan worn on apair of glasses"When I go to the grandkids' hockey game or soccergame I can seewhich direction the game is moving in," Moorfoot said.
"I can shoot baskets with my grandson. And I can seemy granddaughterdancing across the stage. It's wonderful," she added.
The team led by Dr Mark Humayun - a professor ofophthalmology andbiomedical engineering at the Doheny Eye Institute inLos Angeles -have now developed a small and powerful camera thatcould be implantedinside the patient's eye, rather than worn on a pairof glasses.
"The camera is very, very small and very low power, soit can goinside your eye and couple your eye movement to wherethe camera is,"said Dr Humayun. "With this kind of missinginformation, the brain canfill in. This field is really blossoming."
"So in the next four to five years I hope, and we allhope, that wewill see technology that's much more advanced," headded.
"There are millions of people around the world withsight loss. Wewould welcome any developments that could preventsight loss andrestore sight," said Christina Nicolaidou, spokeswomanfor theUK-based Royal National Institute of Blind (RNIB).
"This research could be exciting and we will befollowing it over thenext few years to see how it develops," she added.
Thursday, May 1, 2008
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