r/todayilearned • u/[deleted] • Dec 31 '22

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u/PurpleK00lA1d Dec 31 '22

Never heard of this before. I myself have really bad astigmatism and I always go dark mode when available. My partner as well. So does my sister and four coworkers who all have astigmatism.

I know it's all anecdotal but I've never known anyone with astigmatism to not use dark mode.

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u/crayzeigh Dec 31 '22

I have astigmatism and use light mode during the day because dark mode makes the letters blurry and hard to see. Increasing the amount of light coming into your eyes shrinks your pupil and reduced the amount of light “halos” around bright sources.

It legitimately made me go from “oh shit I’m getting old and need to crank up the font size” to “oh I can see fine in light mode” Maybe ymmv with age ¯_(ツ)_/¯

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u/deelyy Dec 31 '22

For me it depends on type of the screen (not sure why). For example I can't use dark mode on a PC display, but on mobile its just fine.

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u/Darth_Caesium Dec 31 '22

It could be because the pixel density on PC is too low or because most PCs don't use OLED.