image: Stretchable, transparent smart contact lens system. (A) Schematic illustration of the soft, smart contact lens. The soft, smart contact lens is composed of an integrated hybrid substrate, functional devices (rectifier, LED, and glucose sensor), and a transparent, stretchable conductor (for antenna and interconnects). (B) Circuit diagramof the smart contact lens system. (C) Operation of this soft, smart contact lens. Electric power is wirelessly transmitted to the lens through the antenna. This power activates the LED pixel and the glucose sensor. After detecting the glucose level in tear fluid above the threshold, this pixel turns off. This material relates to a paper that appeared in the 24 Jan. 2018, issue of Science Advances, published by AAAS. The paper, by J. Park at Ulsan National Institute of Science and Technology (UNIST) in Ulsan, Republic of Korea, and colleagues was titled, "Soft, smart contact lenses with integrations of wireless circuits, glucose sensors, and displays." view more
Credit: [Credit: Park <em>et al.</em>, Sci. Adv. 2018;4: eaap9841]