These safety glasses are ideal when working with LONG WAVE UV Light for long periods of time and offer protection from UV Light and overall eye protection in the work place. NOT recommended for short wave which Black Light World does not sell. All of our lights are long wave with minimal protection needed. Direct eye contact should never be made regardless of any light. Always practice safety first! This polycarbonate product is impact resistant, but not unbreakable. Replace when pits or scratches reduce vision.