On average, nearly nine in 10 adults (88 percent) spend more than two hours each day using a digital device, with one in 10 people spending at least three-fourths of their waking hours on a digital device. This constant exposure to technology is a shock to our eyes with 65 percent of Americans reporting symptoms of digital eye strain, such as dry, irritated, eyes, blurred vision, eye fatigue, neck and back pain and headaches.

Digital eye strain is the physical discomfort felt after prolonged exposure to digital screen and is associated with the close to mid-range distance of digital screens, including desktop and laptop computers, tablets, e-readers and cell phones. It is not uncommon to start experiencing symptoms after spending two or more hours staring at a device, or more realistically, multiple devices. In fact, on average, 75 percent of people who use two or more devices simultaneously report experiencing symptoms of eye strain compared to only 53 percent of people who use just one device at a time.

Tools are available to help technology users alleviate the discomfort of digital eye strain, minimize vision problems and prevent further eye discomfort. When used in tandem with practical "eye-gonomic" health tips, lenses tailored for digital screen use (computer eyewear) can reduce or even prevent digital eye strain.

Source :https://www.thevisioncouncil.org/content/digital-eye-strain/kids