Scientists have designed a smart contact lens to measure the wearer’s blood sugar without using a needle. So far, the needle-less prototype has only been tested in rabbits — and it’s not clear if it’s even possible to accurately monitor blood sugar using tears. But if it works, it would be a massive upgrade for people with diabetes.
The lens is made out of the same transparent, flexible material that’s in some soft contacts on the market. Inside, the researchers embedded electronics including a little LED light and a glucose sensor. If glucose levels rise above a certain level, the continuously lit LED light flickers off to alert the wearer, the researchers report today in the journal Science Advances.
The scientists, led by Jang-Ung...
