Ju Xing Glasses Product ID:SH2021Suitable to:women and menFrame Material:TR90 frameLens Material:frame(AC)/anti-blue lens(CR39)Dimension::frame(140*48mm) lens(53*46mm) bridge(19mm) arm(140mm) We provide customized service. If your diopter is special, you can buy customized listings. We have 1.56, 1.61, 1.67 reflective index rate lens. You can choose one you like. Meanwhile, if your eyes have astigmatism over 2.00, or your diopter is over 4.00, then please do not buy it. The handling time of customized glasses will be about 10 working days. Package 1*glasses1*box The blue light The electronic products that people use every day, such as computers, smartphones, tablets, and TV LED displays, will send out a lot of blue light. With the popularity of these electronic product, everyone's chance to contact blue light is increasing dramatically.Therefore, a pair of anti blue light glasses is necessary.Long time of exposure under the blue light may lead to fatigue eyes, headaches, sore or terrible skin, stiff necks which affect your sleep at night. It may damage our eye balls. Ju Xing anti blue light lens Lightweighted, anti-reflective, scratch resistant. The Blue light blocking rate is more than 20% which exceeds the market standard for anti-Blu-ray lens.Our anti blue ray lens can not only isolate UV and radiation and can also filter blue light from TV, smartphone, monitor and computer. It protects our eyes from the daily blue light. When to use anti blue light myopia glasses? Wearing a pair of anti blue light glasses will protect your eyes from the harmful blue light. No dry eyes during long time working with electronic screens.No headache after all day long office working. When you are working, playing, reading, shopping, you can wear a blue light blocking reading glasses. It is comfortable to wear and easy to adapted. It is not easy to cause visual fatigue. Benifits of wearing anti blue light glasses Reduce eye fatigue: Reduce eye strain and sensitivity to light when facing digital screens. Great for office workers or anyone who has to look at screen all day.Minimize headache: The blue light blocking glasses will protect your health by blocking detrimental blue light while letting in all other beneficial light.Sleep better: Exposure to high rate blue light will cause uncomfortable. Wearing the blue light filter glasses will improve your sleep, help you sleep better and have a good dreaming.