Evaluation of methods for limiting exposure to laser plume

Use of surgical face masks have been advocated to protect clinicians from inhalation of aerosols containing organic and inorganic particulates. This study examined the ability of tracer particles along with fit-mask testing to measure peripheral marginal leakage. Industry laser and non-laser masks were placed in products commonly worn, however, significantly high numbers of particles were recovered. Passage of inspired air around the periphery of masks appears to circumvent the masks’ ability to screen airborne contaminants.