Since 19 years by now, varicosis has been increasingly treated endovenously. At the start, the rather inconvenient VNUS®Closure plus-procedure and the more convenient linear laser procedure were used, and these were followed in 2006/2007 by the bipolar RFITT – catheter, the VNUS Closure Fast – system and the radial laser. Thus, in the course of the last few years, plenty of experience has been gatheredwith endoluminal therapy, quality criteria have been defined andstandards for the different techniques have been developed.