Kells beauty "in the (crossed) eyes of the creators"

The intricate and precise artwork of the manuscripts of 7th and 8th century England and Ireland, including the Book of Kells, has amazed artists and scholars for centuries. Now paleontologist John Cisne believes he knows how it was done. (photo)

Cisne's theory is that "the Celtic monks evidently trained their eyes to cross above the plane of the manuscript so they could visually superimpose side-by-side elements of a replicated pattern, and thereby create 3-D images that magnified differences between the patterns up to 30 times."