If the contact lenses allowed for very near viewing, then they may be viable for HMD use. The benefit would be that you could use a simple LCD display to create a HMD with a fairly large field of vision. Even even better, one of the upcoming bendable OLED displays to make a very wide field of vision. that could cover at least the full width of vision. If they were polarized, then they may work with a technology that allowed for passive 3D. To have that in a HMD which featured using a curved display, you would probably have to project. But, with the advent of the pico-projectors, that may be quite viable.

Joe Dunfee