Other Indications
Light has many other applications such as regulation of the circadian rhythm, treatment of the tumor cells, special wounds such as pressure ulcers and diabetic wounds through photodynamic therapy (PTD).
Photodynamic therapy
Photodynamic therapy (PDT), sometimes called photochemotherapy, is a form of phototherapy involving light and a photosensitizing chemical substance, used in conjunction with molecular oxygen to elicit cell death (phototoxicity).
PDT has proven ability to kill microbial cells, including bacteria, fungi and viruses. It is recognized as a treatment strategy that is both minimally invasive and minimally toxic.
