If your eyes show signs of fatigue after prolonged use of electronic devices with digital screen, you can benefit from our blue light filter B groove. It is possible that you do not notice the first signs of eye fatigue and other effects of the blue. Take care of what your body is trying to tell you. There are some warning signs you should pay attention to to determine if you need blue light blocking computer glasses. If you suffer from one of the following symptoms, you could benefit from the blue light filter B groove: 1. Eye fatigue 2. Headaches 3. Sleep Disorders 4. Xerophthalmia 5. Difficulty seeing blue light protection glasses are safe for all-day wear, but may be unnecessary. It is important to understand that the blue light is safe for you. The largest source of blue light is the sun, and a small amount of this natural form of blue light is necessary for our health. It regulates your circadian rhythm - the natural wake and sleep cycle your body - and improves alertness, memory, cognitive skills and mood.