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That's true for me as well. I couldn't read the oven clock (blue on black) at just 10 feet away. Anything bright on a dark background is just a blurry radiation

That's true for me as well. I couldn't read the oven clock (blue on black) at just 10 feet away. Anything bright on a dark background is just a blurry radiation pattern. The reason dark-themed terminal and coding is fine, might be the monospace fonts. They are square-ish, so there is less need to find the edges accurately. They are also eligible on very cheap, trashy screens. As a side effect, code is readable in dark themes even with astigmatism. (No source, just a wild guess)

chupasaurus 6y ago
> code is readable in dark themes even with astigmatism It doesn't make anything by itself, the difference in brightness between text and background is. I have a severe astigmatism on one eye, HN page with smaller font size is easier to read with it than a green-on-black terminal (same Noto Mono font). Red or blue colors for text on black background are also slightly harder to read due to the perception.
programbreeding 6y ago
>I couldn't read the oven clock (blue on black) at just 10 feet away I have good vision: no known issues, regular eye checkups, etc. But I find it nearly impossible to read most displays that use blue LEDs. If the background is blue (eg: timex indiglo watch) then it's fine. But blue leds on some of my home theater equipment drive me insane. Even if it isn't the letters/numbers themselves and it's just a regular circular power led, I find them really hard to look at.
- originalbryan2 6y ago
  I first noticed the blue light issue when xmas led lights were put on trees around the holidays. Blue blurry things. Now my credit union has their sign in blue and I can’t read it. 10 years later I developed astigmatism in both eyes. Dark mode is really blurry in some settings. The blue light thing, as I understand it, is where you first begin to notice astigmatism. The wavelength is shorter and a very slight astigmatism becomes more apparent.

chupasaurus 6y ago

> code is readable in dark themes even with astigmatism It doesn't make anything by itself, the difference in brightness between text and background is. I have a severe astigmatism on one eye, HN page with smaller font size is easier to read with it than a green-on-black terminal (same Noto Mono font). Red or blue colors for text on black background are also slightly harder to read due to the perception.

programbreeding 6y ago

>I couldn't read the oven clock (blue on black) at just 10 feet away I have good vision: no known issues, regular eye checkups, etc. But I find it nearly impossible to read most displays that use blue LEDs. If the background is blue (eg: timex indiglo watch) then it's fine. But blue leds on some of my home theater equipment drive me insane. Even if it isn't the letters/numbers themselves and it's just a regular circular power led, I find them really hard to look at.

originalbryan2 6y ago
I first noticed the blue light issue when xmas led lights were put on trees around the holidays. Blue blurry things. Now my credit union has their sign in blue and I can’t read it. 10 years later I developed astigmatism in both eyes. Dark mode is really blurry in some settings. The blue light thing, as I understand it, is where you first begin to notice astigmatism. The wavelength is shorter and a very slight astigmatism becomes more apparent.