Laser surgery is a type of surgery that replaces surgical instruments with special light beams. A laser's operation can be traced back to Albert Einstein's theory of stimulated emission of radiation, and it incorporates other theories that help explain local tissue damage. When a light beam strikes the skin, it can either reflect the light away, scatter the light, absorb the light, or pass right through the skin's layers. Light is used differently by each layer of the skin. Certain areas of the skin, known as chromophones, absorb light. Physical, mechanical, chemical or temperature changes in the tissue may occur when these chromophones absorb light. Carbon dioxide lasers, YAG (neodymium or yttrium aluminum garnet) lasers, and argon lasers are among the many types of lasers. Each one works differently and can be used for various treatment options. Continuous or intermittent laser light delivery is possible. The laser's wavelength determines the target within the skin and the effect it may have.
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