Lasers now have a wide variety of medical applications, ranging from the dissolution of coronary artery thrombus to the repair of a detatched retina. The main types of laser in medicine are surgical, photocoagulator, photoradiation therapy, and cold lasers which are used by acupuncturists. Cold lasers act directly on cells to improve healing and reduce inflammation. They are also used as an effective substitute for needling or electrical stimulation.
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