Pair it with eye tracking. Main problem I see with it is LEDs on a contact lens wouldn't be in focus, at least without some other optics to make them more directional.
The main problem I see is that saccades are ridiculously fast, so not only does the eye tracking have to be extremely precise, but the latency for the track-update-display pipeline has to be tiny.
This problem is already difficult for head motion. Doing it at the eyeball level is way more ambitious.
The main problem I see is that saccades are ridiculously fast, so not only does the eye tracking have to be extremely precise, but the latency for the track-update-display pipeline has to be tiny.
This problem is already difficult for head motion. Doing it at the eyeball level is way more ambitious.