[CalRobert]

I never found a solution. I ended up using a very red-shifted screen set to a very low light but what I really wanted was e-ink, like a Kindle for instance. The only options I came across were impractically expensive, though. https://shop.dasung.com/products/dasung-25-3-e-ink-monitor-p... for instance, and this was years ago when there were fewer options.

[washadjeffmad]

Just noting because I went through the same, but I haven't found I've been able to use any LCD or OLED at very low contrast and brightness without content becoming illegible or uncomfortable without ambient light. However, a relatively smaller CRT maintains a contrast ratio that I don't seem to struggle to look at or decipher in complete darkness.

I've also tried dropping the aspect ratio on my 42" 4k OLED to 4:3 and not scaling the resolution to limit light output, but the pixel density ultimately seems to be a limiter. Since I can work on my smartphone at its lowest output and with redshift, a smaller, higher-dpi display may be key.

[clarkema]

I have a 'study' setup using a Boox Mira (portable 13" eink screen) for exactly this kind of use; not polyphasic in my particular case but late evening use. Yes, the screen is expensive, but _totally_ worth it.

[CalRobert]

Thanks for the tip!