Today’s phototherapy is a descendant of the ancient Greek heliotherapy, and whenever a new light source is found or our knowledge on the interaction of electromagnetic radiation with living matter broadens, phototherapy gets a new face. To answer the question whether the appearance of the magic looking light source, the laser, may revolutionize phototherapy, we first investigate the behavior of the living matter in a radiant environment, then the criteria of laser-specific photomedicine will be discussed. After having set the criteria of objective data evaluation we are investigating whether laser-based, or polarized light only, or simply a rethought photobiology will improve phototherapy in the future. Tissue repair, hyperthermia and acupuncture treatment are used as examples.
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