These are all great suggestions. I'd also recommend using the blue light blocking glasses. This the set of glasses that I currently wear every day while I work at my desk - https://amzn.to/2K1n7tB . They work very well to keep the blue light, which I'm told is the bad spectrum, from hurting your eyeballs.

Also this is a good program to install on your computer - http://eyeleo.com/ It has a little reminder that pops up every hour reminding you to blink and look away and go for a walk.

It's your responsibility to take care of your own health! thanks reminding us!