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The web says that astigmatism leads to glowing, blurry text when it is shown white on dark. The iris narrowing in bright conditions seems to reduce the effect,
by _Microft 3y ago
The web says that astigmatism leads to glowing, blurry text when it is shown white on dark. The iris narrowing in bright conditions seems to reduce the effect, while the widened iris in low light seems to worsen it.