LASER is a type of surgery that uses the cutting power of a laser beam to make bloodless cuts in tissue or remove a surface lesion such as a skin tumor. There are a number of different types of lasers that differ in emitted light wavelengths and power ranges and in their ability to clot, cut, or vaporize tissue. Lasers can be used to accomplish complex tasks. Proper use can reduce blood loss, decrease post operative discomfort, reduce the chance of wound infection, decrease the spread bacteria or of some cancers, minimize the extent of surgery in selected circumstances, and result in better wound healing. They are useful in both open and minimally invasive procedures.