We did a lot of research into AR headsets in my last job. Four years ago they already had a fully functional system that would "project" 3D organs into a plasti

We did a lot of research into AR headsets in my last job. Four years ago they already had a fully functional system that would "project" 3D organs into a plastic cadaver, which could be manipulated with a scalpel-like stylus. There were two key problems - one was the weight (resulting in wearer fatigue), and the other was the refresh rate which caused nausea during prolonged use. Neither of these are significant barriers, and given Moore's Law I wouldn't be surprised if these things are as ubiquitous as smartphones in 5-10 years.