DescriptionWHY USE CYXUS The sources of blue light include all the electronic devices and LED lights. Long time exposure would lead to "digital eye fatigue". With CyxusComputer glasses, keep you healthy by blocking harmful blue light from digital screens, anti eye strain efficiently and improve your sleep. The Cyxus blue light filter is designed to use American blue light filtering technology. Our glasses can filter harmful blue light and eliminate glare to better relieve the symptoms of eye fatigue, including eyestrain, headache, dry eyes and blurred vision.