Maximum Permissible Exposure (MPE) 2 : The maximum level of laser radiation to which a human can be exposed without adverse biological effects to the eye or skin
University of Illinois at Urbana-Champaign Division of Research Safety, Radiation Safety -Glossary of Laser Terminology, Environmental Health and Safety Building, Urbana, IL, USA 2008. http://americanboardoflasersurgery.org/documents/L aserRelatedTerms.pdf, (Rad Sfty/ Laser Terminology - Amer) {502}