Currently Being ModeratedAug 9, 2012 11:35 AM (in response to lutra)
There are many individuals that are sensitive to the flicker of light. Some are sensitive to flourescent lamps, some to the screen flicker of TVs or low refresh rate monitors. Some people have even had seizures from the strobe lights used in some stage productions. There isn't much that can be done to help these folks. Have you tried to wear shaded glasses or prescription glasses? This is really a problem that you need to address with a Medical Professional if you want a real solution.
Currently Being ModeratedAug 11, 2012 2:08 PM (in response to erict43)
Yes, I did have my eyes checked when it first began. The eye dr. said it was plain and simply, EYE STRAIN. And it seems to only occur when sitting in front of my iMac. I have not noticed with my iPad or other computers.
Any suggestions of changes I could make on my iMac that might improve things?
Currently Being ModeratedAug 11, 2012 2:14 PM (in response to lutra)
Have you tried using your computer with a lower screen resolution? I doesn't look as nice, but it does make everything larger. I had a problem when I first got my 27" iMac, because the resolution is so high, the text appears much smaller than I was used to, and I was getting eye strain and headaches too. After a while I adjusted to it, and it's no problem now.
If you want to try a lower resolution, open System Preferences -> Displays.
On Mountain Lion, you have to select "Scaled", and then you can select a lower resolution. If I remember correction, on Lion or earlier there is no "Scaled" option and you can select the resolution you want directly.
Hope this helps.
Currently Being ModeratedAug 11, 2012 3:45 PM (in response to lutra)
Yours is a genuine problem, and it will not be solved by changing the screen resolution which does not affect brightness or glare.
May I suggest you investigate getting an anti-glare screen filter? These are listed here on Amazon in the UK but I am sure that Amazon in the US (or whereever it is you live) would have them as well:
http://www.amazon.co.uk/s/?ie=UTF8&keywords=anti+glare+filter&tag=googhydr-21&in dex=aps&hvadid=9510029705&hvpos=1s1&hvexid=&hvnetw=g&hvrand=2050368072294766922& hvpone=&hvptwo=&hvqmt=b&ref=pd_sl_3zcpi95y9s_b
Currently Being ModeratedAug 11, 2012 3:58 PM (in response to lutra)
I will give that a try. I am not using Mountain Lion yet. Still have LION OS X. I see that my resolution is set up for 1920 x 1200. What would you suggest?
I would try the next lower setting and see if that helps. If it doesn't provide any improvement, then maybe the problem is related to glare as Klaus1 suggests. The good thing is that this doesn't cost anything to try it