New Smart Contact Lens Can Detect Blood Sugar Levels
Researchers have developed a biosensing contact lens which can detect glucose levels in patients with diabetes, according to a study conducted on February 22, 2018.
This smart lens is capable of detecting glucose levels from tears in the eye as they comprise of pliable, transparent electronics. The device is yet to be tested in humans. Once this device is released, glucose levels can be measured with the blink of an eye.
To avoid complications in patients with diabetes, it is important that the blood sugar levels are monitored all the time. The most common method used for diabetic assessment is the finger-pricking method based on enzymes. Approaches like these have reduced compliance among patients who suffer from diabetes.
Several attempts have been made earlier to develop smart lenses for monitoring glucose levels, however, they were not successful due to poor wearability.
Since contact lenses are not preferred by everyone, smart contact lens that uses electrodes were developed by the research team. Highly stretchable and transparent materials were used to make these electrodes. Glucose sensors capable of sending electrical signals to an LED was integrated into this lens. Electric power to the lens is obtained through wireless transmission.
Researchers have tested this lens on a rabbit and found no signs of abnormal behavior. When the tear fluids containing glucose went above the threshold, LED pixels were turned off. The eye temperature was maintained even during the wireless transmission.
Jihun Park, first author of the study said, “These smart contact lenses are made of transparent nanomaterials and therefore do not obstruct the wearer’s view.” This lens does not require any separate power source. This development would lead to an increase in the growth of global continuous glucose monitoring market, as detailed in the global continuous glucose monitoring market report published by Coherent Market Insights.
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