It was a common complaint within my static while we were progging the fight. Not only because it made it really hard to see who messed up and why, but also because the sheer amount of eye strain was mentally draining by the time we were finished each night. I'd leave E8S mentally numb and some nights I needed an ibprofen or two for the headache that came along with it. Sadly aside from playing with your monitor settings like Roda mentioned there's really no way to 'fix' it.