A laser is a very concentrated form of light. Surgeons have learned that a laser can replace a scalpel in some operations. The laser cuts consistently, and it cauterizes (seals off) small blood vessels. A well-known use of lasers is to reshape the cornea of the eye in order to improve vision. Another familiar application is the reattachment of the retina to the back of the eye.
A less well-known use of the laser is to clean plaque from arteries. An optic fiber connected to a television camera is inserted into the artery. A second optic fiber carries the laser light to burn the plaque.
A dentist may use a laser to remove a cavity from a tooth. Another use of a laser is for a podiatrist to burn away a fungus infection from a toenail.
As the article below states, “There are literally hundreds of other medical uses for the laser… And even in those that do respond to laser treatments, a doctor may have a good reason for choosing a different method in a specific case… Yet the world has seen probably only a small fraction of the laser’s potential. After all, this supertool has only existed since 1960, and, considering the medical advances it already has created, the future appears promising indeed.”