same here, when I was younger I could handle it but not anymore. I lower the hdr brightness on all my screens, even lg OLED which only maxes out at like 750nits I got it lowered to about 600nits and in some content even 600nits is too high for my eyes and they start watering and hurting
I've turned down the brigtness on my monitors to half of what I used when younger.. It's become impossible to handle it!