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http://www.optomed.com/case+studies/http://www.google.fi/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CDQQFjAC&url=http%3A%2F%2Feujournal.org%2Findex.php%2Fesj%2Farticle%2Fdownload%2F657%2F719&ei=GlspVO_MFaimygPI54HYAw&usg=AFQjCNHG21FVthEFPN7WvAUc-R0k31wL_w&bvm=bv.76247554,d.bGQ
AUTOMATIC EXTRACTION OF RETINAL BLOOD VESSELS: A SOFTWARE IMPLEMENTATION
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Examples
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Links to excellent studies:
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