BBC NEWS | Science/Nature | Trials for 'bionic' eye implantsBy Jonathan Fildes Science and technology reporter, BBC News, San Francisco A bionic eye implant that could help restore the sight of millions of blind people could be available to patients within two years. US researchers have been given the go-ahead to implant the prototype device in 50 to 75 patients. The Argus II system uses a spectacle-mounted camera to feed visual information to electrodes i
