If you're like us, it's likely that you spend over 6 hours a day looking at a screen. By staring at screens for this amount of time, we're making ourselves vulnerable to the uncomfortable symptoms of digital eye strain and 'blue light'.
Blue light is the nasty stuff emitted from your everyday digital devices. It has a high frequency and short wavelengths, similar to UV light. Studies have shown that, in the short term, increased exposure can lead to headaches, itchy or dry eyes, general discomfort and difficulty falling asleep.
Blue light impedes production of the sleep-inducing hormone melatonin, confusing the brain and disrupting our circadian rhythm. This is why we can sometimes find ourselves restless after bedtime screen use.
The long term affects of prolonged blue light exposure may be even more serious, with some researchers suggesting its contribution to cataracts and age-related macular degeneration (AMD). There's increasing amounts of evidence supporting the possibility that excessive screen use can lead to the onset of permanent vision problems.