DeWalt DPG59-110C Reinforcer Rx Bifocal Safety Glasses Clear 1.00. The DeWalt Reinforcer prescription bifocal safety glasses combine safety with function. You will never have to switch between your safety eyewear and your reading glasses on the job again. Features a powerful frame and lenses that meet ANSI Z87.1 safety standards. The clear lenses also provide 100 percent UV400 protection. The bifocal 1.0 magnifying lenses are molded directly into the lens and out of immediate vision. The fingered nose pad and soft temple tips provide a comfortable and secure fit. Measures 46 mm tall, 155 mm long, and 144 mm wide.