LASER THERAPY TERMINOLOGY
The following glossary is provided to help you navigate through the world of laser therapy. Learn more at VitalityLasers.com.
Class 3B lasers: May have an output power of up to 0.5 watts (500mW) per emitter. There may be multiple emitters contained in one applicator, thus allowing total powers in excess of Class 3B limits without actually requiring the device to be reclassified as Class 4. Class 3B lasers are capable of injuring eyes from direct viewing or reflection of the beam. Class 3B lasers are used as therapeutic devices and are generally safe for skin exposure. However, patients may feel discomfort with darker skin or if areas of dark pigmentation (birthmarks, tattoos) are irradiated. Class 4 lasers: The output power of a single emitter exceeds 500mW. Class 4 lasers are capable of causing both optical injury and thermal injury to the skin. Class 4 lasers generate heat, so it's possible that they affect a different set of biological mechanisms than Class 3B devices when used as a therapeutic tool.
Light amplification by stimulated emission of radiation (LASER): A device that uses the principle of amplification of electromagnetic waves by stimulated emission of radiation and operates in the infrared, visible or ultraviolet region. Continuous wave (CW) emission: Energy emitted in a continuous manner for a period exceeding 25 milliseconds. In continuous wave emission the average power is equal to the peak power.
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