Class 3B and Class 4. The higher the Class number, the greater the power of the laser and the hazard posed by the laser. The Radiation Protection division of the Public Health England (PHE) considers ...

In recent years, class 4 laser therapy has gained attention as a potential alternative or adjunctive treatment for pain management. After four weeks of class 4 laser therapy, this patient reported ...

However, recent advances in therapeutic modalities have introduced class 4 laser therapy as a potential alternative. Rotator-cuff injuries are a common cause of shoulder pain and functional impairment ...

Lasers with power, greater than 5 milliwatts (mW) (Class 3B and Class 4), must be registered with radiation safety and are not a laser pointer, they are handheld lasers and can cause an immediate eye ...