Sunday, May 27, 2012

Color Changing Contact Lens Helps Monitor Diabetes

People with diabetes often have to check their blood sugar using a drop of blood squeezed from a finger, thigh or some other part of the body. 

It's an unpleasant part of managing the disease, but when diabetes patients insulin levels falter, their sugar levels don't just rise in the bloodstream. They rise in urine and tears, too. Now, one researcher is working on creating contact lenses that are able to detect unusual blood sugar levels in the eyes, then change color in response.

Chemist Jun Hu at the University of Akron in Ohio is working on a contact lens coated with a chemical that reacts to glucose in the tears that naturally surround the eye. That chemical reaction makes the lens change color. 

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