An anonymous reader writes: Google has announced on its official blog that it's working on a new way for diabetics to monitor their blood sugar: a 'smart' contact lens. Diabetes is a difficult condition to treat because blood sugar levels vary widely by a person's activity level and food intake. It's also hard to monitor without painful and intrusive measurements — people can feel normal at dangerously high blood sugar levels, while extremely low levels can impair their ability to seek treatment. Google says, 'Over the years, many scientists have investigated various body fluids—such as tears—in the hopes of finding an easier way for people to track their glucose levels. But as you can imagine, tears are hard to collect and study. At Google[x], we wondered if miniaturized electronics—think: chips and sensors so small they look like bits of glitter, and an antenna thinner than a human hair—might be a way to crack the mystery of tear glucose and measure it with greater accuracy. We’re now testing a smart contact lens that’s built to measure glucose levels in tears using a tiny wireless chip and miniaturized glucose sensor that are embedded between two layers of soft contact lens material. We're testing prototypes that can generate a reading once per second.' They're talking with the FDA and bringing in experts to help them figure out the best way to do it.