By the end of the day my eyes burn. The screen goes fuzzy for a second when I look up, focusing on something across the room takes longer than it should, and a dull headache creeps in around the temples. I used to write this off as "just tired.
Source: [Dev.to](https://dev.to/klukyanov/why-your-eyes-burn-by-evening-digital-eye-strain-and-the-20-20-20-rule-53o8)