Anyone get eye strain at night?

27” 4k IPs panel here. Are certain monitors better or worse for this? I read stuff about Pwm and flicker. Is oled better or worse than ips/va?

what I don’t understand is I am fine during the day, but at night my room with the computer is still well lit with torchiere lamps. It’s obviously not as good as natural light during the day, but I’m definitely not using the computer in the dark. But eyes start to ache and get red if I am using the computer past 9pm or so. I have no problems with my iPad Pro . Is the difference as simple as my eyes are not locked onto the iPad as long And therefore I blink more?