Digital Eye Strain (abbreviated to DES or CVS for Computer Vision Syndrome) is symptoms caused by staring at digital devices for too long. This could be a phone, a tablet, a laptop, or a computer monitor. There are a variety of symptoms that people can experience; some people report all of them, some report just one, and many report a mix. The most common symptoms include: Two of the main culprits behind Digital Eye Strain are Blue Light and glare. These by-products of computer screens can contribute too many of the aforementioned symptoms including eye strain, eye fatigue, headaches, irritation eyes, and blurry vision.