A 'bionic eye' may hold the key to returning sight to people left blind by a hereditary disease, experts believe.A team at London's Moorfields Eye Hospital have carried out the treatment on the UK's first patients as part of a clinical study into the therapy.
The artificial eye, connected to a camera on a pair of glasses, has been developed by US firm Second Sight.
It said the technique may be able to restore a basic level of vision, but experts warned it was still early days.
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