I worked on this project.

We have a new version of the eye tracker (2.0) that we are working on which is glasses-less -- should be out soon.

http://collab.eyewriter.org/?p=102 http://collab.eyewriter.org/?p=123

here's it in action (eye is chasing the cursor):

http://visiblevisible.org/deliver/tempt/EyeRec0602_1_Half.mo...

everything is open source / on instructables:

http://github.com/eyewriter