Recent developments in materials, applications and standards related to industrial safety eyewear were reviewed, particularly in the area of protection from ultraviolet and near infrared irradiation. Polycarbonate safety lenses showed superior impact resistance, even at low temperatures, as compared to both other plastic materials and glass. Polycarbonate lenses also had optical transmission properties similar to glass, particularly when mar resistant coatings were applied. Some lenses combined the protective spectral properties of ultraviolet, visible and near infrared absorbers with the impact resistance and light weight of polycarbonate. Coatings designed to provide mar resistance have the added advantage of enhancing the ultraviolet protection of polycarbonate lenses. Such coated lenses not only protect against ultraviolet-C light, but also against ultraviolet-B light and some of the ultraviolet-A light. The need for better standards for the design of laser protective eyewear, improved design of industrial safety eyewear to offer comprehensive protection from not only spectral energy and impact, but also fog, dust, glare, and physical damage, and simple instrumentation to insure spectral protection in protective eyewear were also discussed.
Symposium on Occupational Safety Research and Education, Division of Safety Research and Division of Training and Manpower Development, NIOSH, U.S. Department of Health and Human Services, DHHS (NIOSH) Publication No. 82-103