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Bionic eyes hearten visually impaired

 
American regulators have approved the use of what's being called the first 'bionic eye'. It's intended to benefit people with certain types of blindness. It's called Argus II- a videocamera mounted on special sunglasses sends a wireless image to a grid of 60 electrodes that's surgically implanted in the patient's damaged retina. Al Jazeera's Tom Ackerman reports.
 

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