Decreasing the risk of human immunodeficiency virus or hepatitis B virus infection during endoscopic surgery. The risk of transmission of human immunodeficiency virus and hepatitis B virus infection is small but finite. Urological surgeons are exposed through needle punctures in open surgery and splashes during endoscopic surgery. Safety glasses are difficult to use during endoscopic surgery and they do not offer complete protection. The Steri-Shield, a facial shield designed to be fixed to the endoscope, is described. 