Part of our SAV Eyewear (Select-A-Vision) Optitek Tri-Focus reading glasses collection, these round plastic frame readers (2202) feature 3 powers; the top portion of the lens is to see over your desk at 50% power, the middle portion of the lens is for viewing your computer at slightly less power and the bottom portion of the lens is your normal reader power at +1.00. These trifocus readers feature a black frame and include a matching soft case. Dimensions: Lens width 53mm, lens height 32mm, nose bridge 18mm, frame width 144mm, temple arm 139mm.