Well i dont like too much the idea to have contact lens with microelectronic circuits and leds on the surface of my eye.I'm afraid that this technology could be used for not so legal mass experiment on Human mind. I'm skeptical!!!
Instead I would prefer thinks like the jDome because it looks very similar to those Air Force bubble simulators(this means 360° on horizontal and vertical axes and no need of trackIR like gears!).They can use those new OLED Flexible Screens(not retro-projected!!!) at this purpose, for smaller bubble home systems.Naturally in 5-10 years!!!
this is a demo from Sony