The term, Virtual Reality (VR) is used for immersive experiences, which could be based on real-world content, purely synthetic content or a hybrid of both. Tricking the eye via stereoscopic pictures, videos and software generated three-dimensional scenarios is the most common way. However immersion in VR is limited because it isolates you from the real world around you. For preoperative planning Virtual Reality appears to be useful.
Mixed Reality (MR), i.e. the real and digital worlds integrated and enhanced with holograms, might be mandatory when interacting with the real world, e.g. during surgery. In 1994 Paul Milgram and Fumio Kishino defined a mixed reality as "...anywhere between the extrema of the virtuality continuum.“, i.e. the spectrum between the real environment, Augmented Reality (AR), Augmented Virtuality and the Virtual Reality. Ideally, Mixed Reality integrates your real and digital worlds seamlessly, enables intuitive and natural interactions and provides digital content is wherever needed.
From left to right: Simon Moosburner (Medicine Student), Peter Tang (Biotechnician), Michael Pogorzhelskiy (Interaction Design), Christopher Remde (Game Design), Moritz Queisner (Media Studies), Prof. Dr. Igor M. Sauer (Surgeon)