How do you avoid eye strain while playing online chess? I wear glasses that filters UV light, take a 5-minute break every hour, play on a large screen monitor (23 inch with a refresh rate of 60 Hz), and use lubricant eye drops twice a day. But I also believe that one of the big factor is that I don't blink enough while playing chess. My eyes are most of the time wide open, in order to avoid blundering. I would really appreciate your feedback, advice, and experiences to avoid such kind of problems.
Windows 10 has a setting called "Night Light" in the display settings, and Mac has Night Shift which helps me with eye-strain by reducing blue-light that can cause eye-strain. You can also try the 20-20-20 technique instead of taking a 5 minute break every hour. My eye doctor suggested staring at something 20 feet away, for 20 seconds, every 20 minutes. Probably hard to do when you're playing a lot of blitz games, but something to consider. Good luck.