Quote:
Originally Posted by Nabeel
I'm astigmatic. I must admit I'd never heard before that it caused a problem with backlit devices: but this might explain why I find reading my Sony comfortable.
Thank you for the information!
N.
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No problem. An astigmatism is basically a refractive error in the eye or the lens. Super basically, light just doesn't bend correctly. So you get haziness, blurriness, etc. If you have a super light astigmatism you may not even notice it.
Sometimes doctors will do partial correction (only one axis), full correction, or even no correction at all depending on the specific patients circumstances.
My astigmatism is fairly heavy. Without my glasses everything looks blurry and hazy. I first noticed it many years ago when distant objects had a double or triple image version of themselves, but all of the secondary versions looked like hazy ghost versions. My previous glasses only had partial correction (one dimension) for the astigmatism, and I could see a lot better but I was still getting eye strain every day. Finally got these glasses with full correction, everything looks so beautiful, but DANG it took me FOREVER to adjust to them properly without getting sick. Good now though.
Anyway, any light at all will end up causing problems with an astigmatism if the astigmatism is bad enough. If I take my glasses off, my beautiful high resolution Kindle Fire HDX fonts go from looking bold and tight to looking sloppy and like someone got too much water in the ink!
Long way of saying, I really appreciate e-ink screens due to this limitation of my biological hardware!
(Although, I sometimes jack up the font size if I don't have my glasses on when using the Fire HDX for books. This helps.)