[DanBC]

There have been head-mounted "virtual retinal displays" that focus a laser onto the retina.

I think they're mostly in patent hell.

http://en.wikipedia.org/wiki/Virtual_retinal_display

[Retric]

Manufacturers and commercial uses ... Consumer versions are expected to ship fall of 2015

It would be interesting if this was progressing because some major patent roadblocks where about to expire.

[fla]

Interesting. Thanks !