Color-Changing Contact Lenses Help Diabetics Keep Tabs on Glucose Levels
Want to talk about a sight for sore eyes? Diabetics could soon be weeping tears of joy over a new noninvasive technology that would make the ritual of drawing blood throughout the day ancient history. A biochemical engineer at the University of Western Ontario has developed contact lenses that change color in response to spikes and dips in the wearer’s glucose levels. The secret: Ultra-teeny nanoparticles that react chemically with glucose molecules in tears to produce a shift in hue.
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