Diabetics and anyone else concerned about their blood sugar levels could soon use contact lenses and mirrors rather than pinpricks to measure it.

Researchers at the University of Pittsburgh have developed a thin plastic sensor that changes color based on the concentrations of glucose in bodily fluids.

Asher and Finegold plan to embed their sensor into contact lenses. People will then be able to determine their glucose levels by looking in a small mirror.

The mirror will contain a color chart indicating glucose concentrations. The sensor will range from red for dangerously low glucose concentrations to violet for dangerously high glucose concentrations. Normal glucose levels will cause the sensor to turn green.
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