MIT researchers created a wearable sensor for those with ALS which “can measure small movements like a twitch or smile” that can help them communicate.
https://www.slashgear.com/wearable-sensor-helps-als-patients-who-cant-speak-to-communicate-23643962/
Augmedics xvision™, “the first Augmented Reality Guidance system for surgery”, offers surgeons 3D visualizations during surgery “as if they had ‘x-ray vision'”. The system was successfully used in June 2020 in a spinal surgery procedure. 
https://orthospinenews.com/2020/06/11/first-augmented-reality-spine-surgery-using-fda-cleared-augmedics-xvision-spine-system-completed-in-u-s/