Science and Research Behind Class IV Laser Therapy

Studies on Laser Therapy

American Society for Laser Medicine and Surgery:

Photobiomodulation Overview

Treatments for Traumatic Brain Injury

With Emphasis on Transcranial Near-Infrared Laser Phototherapy

Near-infrared photonic energy penetration:

Can phototherapy effectively reach the human brain?

Comparisons of Light Therapy

Laser Classification

Lasers are classified into four classes and two subclasses based on their wavelength and maximum output of power. The classifications categorize lasers according to their ability to produce damage in exposed people, from class I (no hazard during normal use) to class IV (severe hazard for eyes and skin). The classes are I, II, IIa, IIIa, IIIb, and IV.

Class III vs Class IV Lasers

The main differences between class III and class IV lasers are the maximum power output and the depth of penetration. Class III lasers have insufficient power and penetration capabilities to provide the long-lasting healing and pain relieving treatments of class IV therapeutic lasers.

LED Light Vs Laser Light

LED, or light emitting diode, is different from laser light because of its coherency—that is, how light wavelengths move in relation to each other. LED light emits incoherent waveforms so the light from an LED device is released in many directions. However, laser light have coherent waveforms, meaning that all the light waves move parallel to each other which creates a strong, tight beam of light.