…U. California, Berkeley, natch!). If one wears a contact lens to restrict and decenter the location of the eye's entrance pupil for a few weeks, the behavioral sensitivity of light detection as a function of pupil location changes as if the cones are following the pupil -- like phototactic sunflowers! ] David Vasudevan (Vengu) Lakshmlnarayanan Professor, Optometiy, Physics and Electrical Engineering School of Optomeny University Waterloo David H. Grosof, PhD, MBA President O tiO ia, Inc. (mobile) www.OptiOpia.com EFTA00759995