Staring at our screen all day long can take a toll on our eyes:
I was forced to wear glasses a few years ago for which I blame my screen-time. Since then I am more conscious about the health of my “biological data interface” (eyes) and just got myself computer glasses with blue filter, although I am not sure if they are necessary. The information available on the web is contradictory, but I have an acquaintance who fixed her problem getting tired with computer-glasses.
What DID convince me though is this free tool for Windows-User: EyeLeo. It will ask me every now and then to exercise my eyes. Together with Tomighty Pomodoro timer I get the frequent breaks I need to finish my work days without my eyes hurting.