Entries for August, 2003

The Directional Stiles-Crawford Effect - an Explanation

Friday, August 1st, 2003

A puzzling directional effect regarding light entering the eye was first dicovered in 1933 by W. Stiles and B. Crawford and has since carried their names. In this effect “a light ray entering the eye through the center of the pupil is several times more effective than one incoming through the pupillary periphery.” [… More»]