Steve (San Diego, Ca) on 09/13/2015
I replaced my desktop's newer LED backlit monitor with an older CCFL (flourescent) and do not get the strain. I do get strain from my smartphone and iPad, both have LED backlighting.
Of course the problem may not be LED lighting itself but other optical layers in the screen design that alter the light.
I'll update this post after additional testing.
Solomon (Whitefield, Bury, England) on 04/13/2013
What to do with your screen brightness is to get paper, ideally from a non-fiction reading book and just compare it with your screen, and lower your screen brightness until it matches the white"ness" and brightness of the paper. That way:
Solomon
Bess (Calgary, Alberta, Canada) on 06/27/2012
Wendy (Columbus, Ohio) on 06/27/2012
Nightfire The Mad Alchemist (Danville, Illinois, United States) on 03/10/2012
Angie (Atlanta, Ga) on 09/29/2010
Deirdre (Atlanta, GA) on 09/21/2009
Well, when the symptoms persisted over a week making me very cranky, I jumped online and went hunting for info. I discovered that there is actually a name for this type of eye strain! It's called Computer Vision Syndrome. I started some of the exercises I read on various websites, but nothing made my eyes feel better. I also let cold water from the shower run on my eyes for as long as I could take it. Helped a bit. I tried magnesium oil which definitely helped, albeit temporarily. But it seemed the minute I started back at the computer, the headache, dizziness, and nausea would start up again almost immediately.
I then had the intuitive thought to unhook my laptop from the external monitor and try working on it in another room. Within a day my eyes were back to normal. I figured out that what healed my eyes was that I was now gazing down at the computer screen, whereas before my eyes gazing upwards. I had put my computer monitor on a stand, thinking it was better for my eyes, but apparently this was one of the triggers. The other trigger was the hours and hours spent staring at the computer screen. Bad combination.