1.PROGRESSIVE MULTIFOCUS BLUE LIGHT FILTER READING GLASSES Progressive multifocal blue light blocking reading glasses can help middleaged and elderly people get better visual experience, Multifocus GlassesAnti Blue Light Glasses Readers, Anti blue light UV400 lenses help you resist harmful blue light reflective UVA/UVB rays,help you reduce glare. 2.Note: People's eyesight changes every year after the age of 40. For people who wear multifocal glasses for the first time, it takes about one week to get used to it. Before choosing the correct multiple of glasses, it is recommended to go to the optometrist to get accurate multiple suggestions. Otherwise, if the multiple is too strong or too weak, it will lead to blurred vision or dizziness. 3.3 strength in 1 reader with no separating lines, Up is Distance look for far(0 25), middle is Transition look for computer(75 275), down for reading(100 350). 4.ULTRA LIGHTWEIGHT RESIN FRAME Extremely durable and lightweight, you can barely feels its presence. Retro Classic design, high grade of frames. Suitable for all face types. Whether your face is oversized, medium or Small, Good protection for your eyes and head! Pretty all day!