Laser surgery has a great advantages such as highest precision and predictability, ability of selective exposure, good repeatability, short postoperative period.
to answer this question you need find the exact application of laser which you want.
you may use it as a surgery knife or as a destroyers for harmful cells, etc. as a knife, laser is very sharp which could create very narrow and highly precisely. the laser is mounted on a robot arm and decrease which gives rise to sharp drop in human errors. moreover a laser produced cutting has no pain.
as a bad cells destroyer, lasers have selective absorption in a certain body issue (because of injected drug) which could pass of outer issues and absorb in inners. this application increase of surgery success percentage and prevent other health issues from damage.