If you mean laser or Lasik Eye surgery then no Medicare does not cover the cost of having lasik eye surgery and that has to be paid out of pocket.
You can get Lasik Eye or laser eye surgery for around $250.00 per eye so it's not that expensive although some health insurance meaning private health insurance may cover the cost of laser eye surgery but it's not guaranteed.
If you're asking about Laser Spine surgery for back pain then Medicare usually does cover at least a portion of the cost of Laser Spine Surgery but you still may have to pay a portion of the Laser Spine Surgery out of pocket.