There are of course challenges with this sort of device. Where does it get its power from? Does the power source, or the wireless signal, have an impact on the wearer's health? And of course, is the claimed functionality valuable enough to provide the user with something valuable? How much will these lenses end up costing, and can the production price be driven down low enough to make the lenses worthwhile?
Google Unveils Smart Contact Lens Project to Monitor Glucose – Bloomberg
Google Unveils Smart Contact Lens Project to Monitor Glucose