The OEMTOOLS Safety Readers are designed to extend the user's field of vision without sacrificing safety. These readers are offered in +1.50 to +3.50 diopter for an array of vision correction needs. The innovative multifocal technology allows users to see at various ranges, so they no longer need to adjust their glasses to see through a corrective bifocal lens. The bottom of the lens provides the highest magnification, providing wide near vision correction at close ranges. As the user looks up through the lens, the magnification transitions to intermediate magnification for clear, consistent vision at distance up to 6'. The high-impact, anti-scratch lenses are ANSI compliant and provide 99.9 percent UV protection. The fully adjustable stems are designed for a custom fit, and feature a flexible rubber ear piece designed to stay put during work.