Integrated Biodevices for Smart Contact Lenses

Smart contact lenses—contact lenses with built-in electronics—are a next-generation wearable product with capabilities beyond simple vision correction. Since the electrical lenses are in continuous contact with the eyeball surface, they have three main applications: (i) biomedical sensing of tears and intraocular pressure to monitor health conditions, (ii) wearable displays for augmented reality (AR), and (iii) actively regulating eye accommodation to ensure perfect vision. Thus, a smart contact lens has substantially greater functionality than an electrical eyeglass. We have developed several prototypes of an ultrasensitive diagnostic smart contact lens [1-5] with high sensitive biosensors and high efficient parity-time (PT) symmetric wireless transfer systems, a wireless electrochromic lens using conductive polymer-based film, and multi-electrode electroretinogram (ERG) lens system. I will present a detail in my invited talk.<br/>[1] T. Takamatsu et al, Adv. Mater. Technol, 8, 2201704, 2023.<br/>[2] S. Azhari et al, IEEE Sensors Journal, 23, 7902-7909, 2023.<br/>[3] L.Hu et al, Sensors and Actuators A: Physical, 344, 113766, 2022.<br/>[4] T. Takamatsu et al., Adv. Funct. Mater., 30, 29, 2020.<br/>[5] T. Takamatsu et al., Adv. Mater. Thechnol., 4, 5, 2019.