Meijin
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Posted : Jul 15, 2006 17:04
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People actually use some of those op art pictures for scientific research: there's this wierd thing whereby geneticists and molecular bio-chemists can look at pictures of proteins thru a type of stereogram (stereo actually meaning 3D) picture as a 2D representation on a page. In the stereogram, there are usually 2 line drawings and the reader has to cross their eyes (or relax them) until the 3D structure is seen - the protein
see the classical stereo pictures section here for examples:
http://www.icpf.cas.cz/jiri/pic.htm
so there are people all over the world in med schools being stupid with their eyesight 
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