Summary
Researchers at Stanford University and POSTECH have developed a smart contact lens that monitors blood sugar levels through a chemical reaction involving glucose in tears. The lens uses a combination of gold and platinum nanoparticles embedded in a polymer hydrogel to catalyze this reaction, producing electricity proportional to glucose levels. This technology offers continuous, non-invasive monitoring and could help millions manage conditions like hypoglycemia and hyperglycemia. Unlike previous devices, the smart lens shows improved accuracy, stability, and faster response times. The system has been successfully tested on rabbits and a human volunteer, showing promising results comparable to traditional glucometers. This innovation could revolutionize wearable biometric devices for diabetes management.