"Protection for Your Eyes : Alleviates visual fatigue and discomfort from long periods of web surfing, gaming and working under fluorescent lights with protection and glare reduction. Reduce Eyestrain : Enjoy your digital time, NO worry about eye fatigue, blurred vision and headache. Better Sleep : Amber lenses block more blue rays than others and see more realistic.You'll never have trouble with sleeping again. Excellent TR90 Material : Ultra-lightweight and flexible TR90 nylon frame material for durability and comfortable long-term wearing. Casual frame design keeps you looking professional and stylish while working or playing video games. Rest Assured to Buy : If any broken problem happening; just contact the seller without any hesitation to solve the problem until your satisfaction. Use the blue light torch to beam the blue light testing card and glasses as shown in the first picture. We can see that one part of the testing area directly beamed by blue light has turned blue, and the other part shaded by Livho Glasses has not turn blue. Thus we can see, Livho blue light filter glasses can block most of the harmful blue light and protect your eyes. Minimize headache Do you suffer headaches from long time screen time? blue light blocking glasses will supercharge your health by blocking detrimental blue light while letting in all other beneficial light. Better Life Exposure to high rate blue light will impact our sense of circadian rhythms and wreck our internal rock, then cause insomnia. Wearing livho blue light filter glasses will improve your sleep, help you sleep better and feel good everyday Anti eye fatigue Long time exposure to blue light would lead to digital eye fatigue. Wearing your livho glasses, no more tired eyes. 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. "