DONEGAN OPTICAL-OptiSIGHT Magnifying Visor with three (3) Lens Plates. Color: Planetary Purple. Hands-free mangification produces accurate and efficient viewing. The visor tilts up for normal viewing or down for magnification. OptiSIGHT brings work closer into focus with the Precision Optical Grade Acrylic Prismatic Lens, reducing eye strain and fatigue. Visor is made of high strength plastic that will not break, design shields out unwanted glare. Included are three different interchangeable lens plates that are simple to change, 3x, 4x, and 5x Power Magnification. Visor can be worn over prescription or safety glasses.