Here's what Google had to say about it:
"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. We're also investigating the potential for this to serve as an early warning for the wearer, so we're exploring integrating tiny LED lights that could light up to indicate that glucose levels have crossed above or below certain thresholds. It's still early days for this technology, but we've completed multiple clinical research studies which are helping to refine our prototype. We hope this could someday lead to a new way for people with diabetes to manage their disease."
Novartis appears to have plans beyond simple glucose level monitoring, though. It plans to use them to treat people with presbyopia, who can no longer read without glasses, and is even considering the possibility of implanting the lens directly into the eye. Which, is great but... ouch?
The technology is still very much in its infancy—you can be sure it'll take a while to get FDA approval—but this is a big step forwards. This is one Google X project that is definitely becoming a commercial reality.
source: gizmodo.com by Jamie Condliffe