Computer-infused contact lenses fit in with the sci-fi ethos of the Google[x] project. But guess what -- Microsoft backed the research three years earlier. Google is the only big tech company that's visionary and disruptive enough to back an idea like the smart contact lenses to help diabetics monitor blood-sugar levels, right? Wrong. Microsoft, that dowdy old has-been (at least in Silicon Valley conventional wisdom), was involved in the very same project in 2011. Project co-founder Babak Parviz, who today also leads Google Glass, previously worked on the contact-lens idea while at the University of Washington, cooperating with Microsoft. The project, at that time clearly at an earlier stage of maturity, is the centerpiece of a Microsoft video spotlighting the idea of a natural user interface that lets people work with computers without even knowing it. The contact lenses include a tiny microprocessor that could judge glucose levels in tears, then beam that information wirelessly to a device that could process the data and display results. "People were not convinced that this was doable. A lot of people considered it science fiction," Parviz said in the Microsoft video. But Desney Tan of Microsoft Research had faith. "Desney and Microsoft Research were early on convinced that this was a worthy cause. They were willing to work with us and support us. We're very grateful they did that." Google[x] researchers therefore aren't the only one that saw the potential for the technology. But while Microsoft may get some bragging rights here, you can't overlook the fact that Google is the company that hired Parviz and that is pursuing the contact lenses as well as Glass. Google also announced on Thursday that it's in discussions with the health-care companies and the US Food and Drug Administration about commercializing the contact lenses.