This image, a simulated version of a contact lens for diabetics that changes color with blood sugar levels, has figured prominently in the University of Akron’s ad campaign, including a regional Super Bowl spot. Researcher Jack Hu has spent the past 8 years working on the technology, and hopes to have a fully functional prototype ready in a few years. CLEVELAND, Ohio — What if a contact lens could tell you how high your blood sugar is by changing color?
Source: http://www.cleveland.com/healthfit/index.ssf/2012/02/contact_lens_for_diabetics_fea.html