Fig. 4 |. Wearable photonic healthcare devices.
Applications of wearable photonic devices for photonic health monitoring using smart contact lenses and skin pulse oximetry devices (part a) and health intervention for mental and skin disorders (part b). DDS, drug-delivery system (can also be used for theranostic applications); LED, light-emitting diode. The skin device in part a is adapted with permission from REF.142, AAAS. Part b is reprinted from Hugh Threlfall/Alamy Stock Photo and Guy Corbishley/Alamy Stock Photo.