GUDVUE Blue Light Blocking Glasses is your eye guardian: --Anti-Eyestrain --UV400 Protection --Reduce Headache --Sleep Better --Anti-Glare GUDVUE Tips: The American Academy of Ophthalmology, the Vision Council, and other vision-related organizations urge moderation in screen use. Most of them recommend adopting the 20-20-20 rule. That means that every 20 minutes, you'll look at an object at least 20 feet away for 20 seconds.