'Smart' Bandage Shows Tissue Oxygen Levels (IMAGE) Optica Caption The transparent liquid bandage displays a quantitative, oxygenation-sensitive colormap that can be easily acquired using a simple camera or smartphone. Credit Li/Wellman Center for Photomedicine. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.