It looks like Google poached MSFT's engineers to work on this -- Babak Parviz was working on this at Microsoft 3 years ago, and is now cofounder of the smart contact lens team at Google.
[1]: Functional Contact Lens Monitors Blood Sugar Without Needles (http://research.microsoft.com/apps/video/dl.aspx?id=150832)
http://research.microsoft.com/en-us/collaboration/stories/nu...
>Tan and Microsoft Research Connections have been great supporters of the project, Parviz said. Their willingness to explore and invest in the project was critical to advancing research and development of the functional lens. “A lot of people considered it science fiction,” Parviz says. “Desney and Microsoft Research were actually, very early on, convinced that this is perhaps a worthy cause. And they were willing to work with us, and support us. And I’m very grateful they did.”