fun game!  I liked it well enough in the core levels, but it really shined in the difficult levels.  I'm one of those stubborn people who sees difficult levels and can't let it go, so I kept at it until I beat all the difficult ones (whew).  you tuned this nicely by showing only the path of the eye until it hits the player (not after) and only for a moment.  i also liked that it required both thought/strategy and quick movements of the player.  nice!