Laser medical treatment is one of the important contents of laser medicine. According to the different effects of low level laser on organism, low level laser is divided into two kinds of “strong laser” and “low level laser”, so it is divided into “surgery” in laser treatment, Treatment and “non-surgical” treatment of two aspects. Therefore, learning laser treatment must understand the basics of laser in order to better use laser treatment of various diseases.

In medicine, due to strong laser and low level laser biological mechanism of different, so the clinical application and basic research in the purpose and methods are different, then the strong and low level laser how to distinguish it? In this issue, the academic knowledge is not very uniform, it is called strong laser “high power” or “high energy”, “high intensity” laser; then, low level laser becomes “low power”, “low energy” or ” Low-intensity “laser. We believe that the mere use of the laser’s own physical parameters to measure the strength of the laser is not accurate, such as how much, how much energy intensity is considered “strong”? How many count “low level”? Difficult to master. Other scholars have suggested that the biological effects of laser and biological tissue should be used to distinguish the strength of the laser is more appropriate, the following we use this point of view to define the medical strong laser and low level laser.

1. powerful laser irradiation biological tissue if the direct cause of the biological tissue irreversible damage, then the affected area of ??the laser called “strong laser”.

2.¬†low lever laser If the biological tissue of the laser does not directly cause irreversible damage to the biological tissue, the laser at this exposed area is called “low level laser”.

Strong laser is mainly used for surgical treatment, that is, with the “light knife” on the affected area for cutting, vaporization and coagulation therapy. Weak lasers are used for radiation therapy and acupuncture (light needle) treatment, the purpose is to promote cell growth and adjustment function. The former is “destroyed”, the latter is “repair”, but both are for the treatment of the disease. It is important to note that the use of laser photodynamic therapy for tumors, although also caused by irreversible damage to biological tissue (such as tumor disappearance after irradiation), but it is due to the participation of photosensitizer, rather than laser directly caused by irreversible damage, it is still low level laser.

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