Lab on a Contact Lens Can Measure Stress Through Serotonin

Lab on a Contact Lens Can Measure Stress Through Serotonin Smart contact lenses might one day measure body chemistry throughout the day Smart contact lenses might one day measure body chemistry throughout the day Charles Q. Choi is a contributing editor for IEEE Spectrum. In the future, a contact lens printed with winding electronics could act as a wearable sensor for measuring biochemical signals like serotonin levels.