martin Irlen is quite literally the sensitivity to certain color wavelengths. I have no idea why the diagnosis is considered "controversial". I think there is something to it, but I haven't been able to find any color-blocking lenses that do the trick yet. Just brightness at 0%, color temperature Warm, and f.lux @ 5000K has been my godsend.
But most importantly, I'm still using a Dell U2410 (LCD). I can't use LEDs at all - I get a sharp headache within minutes that can last for days. Also, if I crank the brightness settings of my LCD up, and change the color temperature to a cooler setting, the symptoms will slowly return (I do this when working on color-sensitive graphics work, and I literally just put up with the pain before reverting back after I'm done).
And most strangely of all, I'm fine with OLED TVs. I heard OLED has a much less pronounced spike of blue light in it though.
Can you see why I'm currently on the blue light sensitivity theory, based on my own personal experience?