A laser is a very thin, focused beam of light that heats and destroys tissue. Lasers can focus very accurately on tiny areas. Doctors can use lasers: instead of blades (scalpels) for surgery to heat ...

These lasers can also treat certain types of spider veins on your legs. Treating unwanted veins with Alexandrite and ND:Yag lasers is very fast. The laser uses intense light which injures your blood ...