You could just dim the glare points so they aren't glary anymore, but you could still see the light sources. My car has an auto-dimming rear view mirror, which works very well. This dims the lights so you don't get glare (much of the glare at night is from cars behind) but you can still see the lights without problem. It's so natural you don't notice it happening. The same principle could be used.

I would see it as a thin film applied to the inside of the windscreen, or possibly some type of HUD optics.

Car makers can already track eyes, because the latest research is in tracking blink rates to detect fatigue.

I'd say this tech is feasible just needs the different disciplines brought together to make it work.