Princeton University researchers are developing a new type of glucose monitor that uses a laser to measure blood sugar. The device would provide a painless alternative to current methods of checking blood sugar.
The monitor uses a laser that goes a fraction of a millimeter deep into the skin to measure the amount of sugar molecules present. Sugar molecules are absorbed into the light when the light interacts with these molecules. When the laser leaves the skin, parts of the laser are missing, and those missing parts reveal how many sugar molecules are in the skin. The monitor has proven to be very accurate, but additional development is needed to reduce the size of the monitor, make it faster, and more cost-effective for consumers.