Bifocal Safety Glasses are ideal for those who need to wear safety glasses on the job or working on projects at home but also need to read or write using reading glasses. These glasses are ANSI Z87-approved safety glasses with impact resistant polycarbonate lenses, and feature a reading area at the bottom of the lens, ideal for making a quick note or reading without changing glasses. They come in all standard reading glass strengths, and are available with clear, smoke gray, or yellow polycarbonate lenses.