[pier25]

It's was metaphorical, not literal pain.

> People who have myopia or astigmatism also may experience halation (from the word “halo”). Halation occurs when light spreads past a certain boundary, creating a foggy or blurry appearance. In other words, white letters can appear to bleed into a black background, making it more difficult to read, especially if the print is fine.

https://www.allaboutvision.com/digital-eye-strain/is-dark-mo...

[young_hopper]

I mean, sure. The inverse (black text bleeding into a white background) is also true. Astigmatism makes it harder to pick out the edges of things which tends to make things seem more blurry.

There are other sentences in that article that are more compelling, mainly that "Halation is more common and more severe when using dark mode." I'd be interested in hearing actual statistics on this. I haven't personally noticed dark mode being any different than light mode.

The article goes on to explain having an updated prescription is the best thing to not have to worry about that.