This has the potential, really the likelihood, to be the medical breakthrough of the decade: http://www.usatoday.com/story/tech/2014/01/16/google-smart-contact-lens/4540727/?csp=fbfanpage. Continuous glucose monitoring is the holy grail of biomedical engineering. There has been numerous attempts to develop a workable technology, but they've all had serious shortcomings. This one might just work.