http://www.newscientist.com/blogs/onepercent/2011/11/electronic-contact-lens-displa.html
http://iopscience.iop.org/0960-1317/
In case anyone else wondered, "electronic contact lens" here means a contact lens with a HUD-like display for overlaying data on ordinary vision, not something like an artificial retina.
http://www.newscientist.com/blogs/onepercent/2011/11/electronic-contact-lens-displa.html
http://iopscience.iop.org/0960-1317/