“Scientists have been interested in the movements of our eyes while reading for forty years. However, until now most assumed that when we read both eyes look at the same letter of a word concurrently.
Now ground-breaking research by cognitive psychologist Professor Simon Liversedge and his team at the University of Southampton has shown that this is not actually the case. They found that our eyes are actually up to something much more exciting when we read — our eyes look at different letters in the same word and then combine the different images through a process known as fusion.”
Link:
http://www.sciencedaily.com/releases/2007/09/070910092543.htm
