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How to improve your WFH lighting to reduce eye strain

https://rustle.ca/posts/articles/work-from-home-lighting
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This is worth considering in the context of driving at night.

I used to get terrible eye strain, causing fatigue and sleepiness. Obviously not good.

Then I bought a Saab 900. It had a 'night mode' that disabled all dials except the speedo. The lights went off and the dial went down. (It came back on if it needed to alert you of something, say low fuel.) [0]

This made a radical difference, and led me to the dash-brightness dial that nobody ever touches. Turns out if you turn that way down, reducing the contrast between you and the road, it's actually enough to get you 90% there. Because you probably don't drive a 1992 Saab (more's the pity).

[0]: https://www.youtube.com/watch?v=KIfzUqYEkiw

My Crown Vic can be pretty dark on the inside. The problem with this is the outside light sources like other headlights, especially with certain cars like Teslas that are super bright and aim high. If anything, I feel less eye strain with more lights inside. But either way, I get a headache any time I drive for >2hr at night, haven't found any solution.
Are there any cars that DON'T have a way to adjust the brightness of the dash lighting?

Every car I've ever owned (86 Chrysler, 2000 Suzuki, 2016 Subaru, 2019 Tesla) had a dial to adjust the brightness of the dashboard lighting, or in the case of the Tesla, adjust the brightness of the screen.

Sure, I couldn't completely shut anything off like your Saab, but I could easily turn the brightness down pretty dim.

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Related, the color of your dash matters, the modern backlit screens (both dash and entertainment) emit much white and blue light.

Mazda and Bmw (traditionally, less the last 5 years) seem to consider human ux more than others - hence orange lighting. Modern ambient (orange or green) can be nice.

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