Whether produced by a true laser or a photon device, a beam of light energy travels through tissue. Unlike ultrasound therapy, which heats specific tissues, photon therapy stimulates the release of neurotransmitters that activate cell functions without raising tissue temperature. It has also been successfully used to lower pulmonary blood pressure, which is a stress failure of the capillaries in the lungs from overwork. It happens to racehorses, racing camels and greyhounds. Equine therapists have also successfully treated laminitis, a painful foot condition.
Therapeutic ultrasound can treat damaged tendons.
Sound waves vibrate and provide a massaging effect. In simple treatments like cold therapy, therapists apply ice to reduce swelling and prevent hematomas. In iontophoresis treatment, therapists use electrical currents to drive veterinary-prescribed drugs into trouble spots. It is non-invasive and sterile and the medication is concentrated locally. Therapists use electrical stimulation to assess and treat nerve and muscle tissues.