An assessment of occupational exposures to ultraviolet radiation from transilluminator light boxes in the course of biomedical research procedures

Transilluminators, used in biomedical research, can be a significant source of occupational exposure to ultraviolet radiation (UVR). Ultraviolet exposure can result in biological effects ranging from photokeratitis to erythema. In this study, a comprehensive risk assessment evaluation of transilluminators was performed. The survey data revealed 80% of transilluminators units had some type of engineering control designed into the unit and over 75% compliance with the use of PPE. Self reported adverse health effect such as eye and skin injuries were reported and found significant variable correlated to the presence of a shielded cover on the transilluminators and the availability of a full face shield. While percent compliance is high, recommendation can be made to reduce the possibility of overexposure by instituting a UVR specific training awareness program, purchasing and installing shield covers and implementing a purchasing program to require the purchase of UV transilluminator units to have engineering controls specifically the shield covers.