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Quote:
People with astigmatism (aproximately 50% of the population) find it harder to read white text on black than black text on white. Part of this has to do with light levels: with a bright display (white background) the iris closes a bit more, decreasing the effect of the "deformed" lens; with a dark display (black background) the iris opens to receive more light and the deformation of the lens creates a much fuzzier focus at the eye.
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This would explain why I can't drive at night..
(well, I can but I choose not to because it's harder for me to see-
everything is blurrier)
I have large astigmatism in one eye plus two very myopic eyes.
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