The use of lasers affects the physiological and metabolic reactions of the human body to achieve the goals of treating pain and promoting wound and tissue recovery. Also known as cold laser or soft laser, it irradiates the human body with laser energy of several milliwatts to tens of milliwatts, and affects physiological and metabolic reactions in the body through electromagnetic effects or photochemical effects, including vasodilation, increased DNA synthesis, collagen. Tissue proliferation and immune function enhancement, etc., in order to treat pain, promote wound and tissue recovery.
