Contact Lenses that Check Blood Sugar?8:01 PM
In the next few years your optometrist may be fitting contact lenses for more than just your eyesight!
At the University of Akron, professor Jun Hu has applied a chemical coating to contact lenses that react to glucose levels in tear film. The coating is comprised of a molecule that binds to sugar in the tear film, and at a certain concentration, will cause a color change reaction. Imagine a pH test with its color scale, and you get a similar picture. When the level of glucose returns to normal in the tear film, the color of the contact lens would again normalize.
In his initial proposal, Hu suggests the patient will wear the lens in 1 eye, and then take a picture of their own eyes with a free smartphone app to monitor for changes. The app will compare the color difference between the normal eye and the eye with the contact lens to calculate the blood glucose levels. The color change will be subtle, without affecting vision or comfort of the contact lens.
|Microsoft is researching an electronic sensor implanted |
inside the contact lens
Sources: High-tech contact lenses: Glucose Monitoring by Dr. Goodfellow and Dr. Maino published in AOA News