Smart Contact Lens In article number 2309785, Weihua Pei, Kai Jiang, La Li, Guozhen Shen, and co-workers present a Ti3C2Tx MXene-based contact lens sensor with an extremely high sensitivity of 7.483 mV mmHg−1, which is then integrated with the wireless module and achieve real-time intraocular pressure monitoring and warning via mobile phones. This work provides a new material platform and new thoughts for future multifunctional implantable microelectronics.