Thought I might weigh in on this. I do not have migraines, but I am having a TON of trouble with my new computer, and I thought Iād share my findings.
I have always been a Windows user. Iām a programmer and was on Windows 7 with a laptop and external monitor attached. No problems; I could look at it all day with no trouble. I also have used an iPad and iPhone, both with Retina display, for years with no problem.
But I just switched my computer to a MacBook Pro. Whatās REALLY strange is that I have it plugged it into the same LED monitor (which Iāve always loved), same room, same lighting setup, no changes to anything. The refresh rate is the same, the brightness and contrast are the same (and Iāve fiddled), the ambient lighting is the sameā¦ absolutely everything.
And itās making me ill. I keep thinking it will get better, but it doesnāt.
Iāve checked and double-checked the monitor settings. I have strenuously avoided looking at the laptopās own Retina screen to eliminate that variable. Iāve moved the monitor back and forth; fiddled with every setting under the sun. I went to the optometrist and my prescription hasnāt changed. And what Iāve come down to is, itās the way the Mac antialiases type. I donāt think thereās any getting around it.
How can I be so sure? I did a screen grab of this webpage on my Windows laptop and looked at in in Photoshop ON THE MAC. It was perfectly fine; I could read it without the slightest strain. Looking at the SAME PAGE in Chrome, using the Macās own type antialiasing (both with the LCD font smoothing option on and off) was nauseating.
Looking at the image zoomed in, on a pixel-per-pixel level, shows that Windows cheats the fonts a little to give you strong, thin verticals that always occupy one pixel and are 100% dark, In contrast, the Macās verticals are a bit thicker and often engage two pixels at varying levels of brightness. Itās almost like it confuses the eye, which doesnāt know where to āgrab onā to the next stroke.
I have tried every tweak in the bookā¦ Flux (the color-temperature adjuster, which Iāve always used), frequent breaks, eye drops, making sure my ergonomics are sound, blinking, eye exercises, and several Mac setting adjustments (including āIncrease Contrastā and āDark Modeāā¦ even a tweak to Mac OSX Yosemite that restores the system font to Lucida Grande). So far, no luck with any of this.
So why have my iPad and iPhone never bothered me? My guess is itās the Retina display, which gives each character twice the number of pixels, so their verticals are in the 3ā4 pixel range. Here, the ratio of stroke width to pixel size is much higher, so the algorithm used is much less important. And a screen capture from the iPhone is very close to a screen capture from the Retina display on the MacBook (though the MacBookās text looks very slightly less bold).
So now what I canāt fathom is why the MacBookās Retina display is giving me trouble, when itās pretty much the same as the iPad screen. Iāve ordered a new pair of glasses with a slightly more positive correction (reading glasses) to see if they help, but my guess is that they will not. Apparently there is no way to completely turn off the Macās font smoothing, so Iām not sure what to try next, other than go back to Windows (and spend another week moving files, backing up, installing applicationsā¦ groan!). I havenāt given up yet, so if I come up with anything else Iāll come back and post on it.