lesbentley: that's sounds excellent. I particularly like the idea of adding a control for the strength of the effect. But maybe we need one of those for bother the upper and lower lids?

In your example I find that the upper lid motion is not strong enough. In order to keep the same perceived state of awakeness/alertness, the distance between the pupil and the edge of upper lid should stay the same. On the other hand, I'd have to verify it, but my feeling is that the movement of the lower lid should be very, very subtle. It seems too strong in your example.

-- I'm not mad at you, just Westphalian.