Mixed reality uses a combination of virtual images and reality.

Florida Trend has an article about some uses for virtual reality.

The problem: Retraining the victim of a brain injury how to function in his own kitchen without exposing him to sharp objects or hot burners. The solution: Take pictures of the injured person’s actual kitchen. Build a bare-bones dummy version of the kitchen in the lab. Then, use a head-mounted goggle-type device to combine the pictures with the dummy kitchen, creating a safe “reality” for the injured person to relearn kitchen tasks without fear of injury.