After several lifetimes of intentionally exposing myself to black/colored text on white, I switched to dark mode last week and haven't looked back.

With such an extensive time study, highly unlikely to be usurped any time soon, and the result being quite the opposite of what I set out to prove, we can all safely put this debate to rest.

A contributing factor is my keratoconus has had some kind of remission. Which is a good thing. At one point I had so many focal points in both eyes, without corrective lenses and before surgery, more than a dozen overlapping versions of text produced unreadable spaghetti. Unless it was a very tiny font from a distance, and then the glyphs only partially occluded each other, and I could I decode them.

Looking at one of those small bright electronics power LED dots across a dark room, I could see all my focal points in each eye, and focal webs meandering between them.

So I feel quite privileged to be able to use dark mode with unaided eyes now.