Two huge russian speaking forums, for tech savvy people.
iXBT - mostly about computer hardware
https://forum.ixbt.com/topic.cgi?id=28:30236 - a huge thread about comfotable monitors for sensitive eyes, people dont usually discuss eystrains, more like eye discomfort. (There are 4 parts of this thread)
https://forum.ixbt.com/topic.cgi?id=28:29922-12 - thread about eyestrain from every new monitor.
4pda - phones and gadgets
https://4pda.to/forum/index.php?showtopic=943228 - thread where most severe pain is discussed
https://4pda.to/forum/index.php?showtopic=299578 - amoled pwm is discussed, and problematic ips phones
(I feel that all the solutions could be found way faster if english speaking internet had anything similar to how people discuss everything through forums in eastern europe)