Why choose Anti-blue reading glasses？<br />1. It can reduce the damage of blue light to the eyes, and can also prevent vision loss.<br /><br />2. It can reduce visual fatigue. Watching TV or mobile phones for a long time can cause visual fatigue.<br /><br />3. Wearing COJWIS blue light filter  reading glasses will improve your sleep, help you sleep better and full of energy everyday! <br /><br />What's the progressive multifocus reading glasses? <br />There is a continuous diopter from far to near, so that visual objects at different distances can achieve higher clarity. <br /><br />The bottom part of the lens is full-power magnification, then used for nearly distance reading. <br /><br />The middle part is slightly reduced power magnification for working on computer, watching TV, etc. <br /><br />Top part is half-power magnification for walking, shopping. It means that you can wear the glasses anytime and anywhere.