Select-A-Vision Optitek computer readers (2103) use advanced technology lenses to filter harmful blue light emitted from digital devices such as computers, tablets and smartphones. These black reading glasses feature a rectangular plastic frame with +2.00 power lenses that help prevent digital eyestrain, headaches from over exposure to blue light and reduces the risk of age related macular degeneration (AMD). This pair includes a matching soft case. Dimensions: lens width 54mm, lens height 31mm, nose bridge 15mm, frame width 134mm, temple arm 145mm.