[lcnPylGDnU4H9OF]

I have two and, judging from colleagues’ reactions, I am unsure which is more unpopular.

The font size in my text editor/terminal is 22 pt (I think; it might be 24). I want to avoid eye problems when I am older and I believe avoiding strain on them when I am younger will make that more likely.

My lines of code are no longer than 80 characters because reading vertically is faster and less error-prone than reading horizontally. (100 characters is also acceptable.) This has nothing to do with old software except as far as it introduced the 80-character limit at all. However, it is somewhat related to the font size, given a larger font means fewer characters per line, but they are otherwise independent choices.

[kazinator]

I experimented working with large fonts when I was in my early 20s. I discovered that it turned out to be bad for the eyes. I believe I understood the issue. I was able to continue to read text fine in spite of not taking any breaks for hours or even not blinking for long periods, letting the eyes dry out. Sure, the text would get blurry, but because the font was so large, that wasn't an impediment.

So while I did confirm the obvious readability of large characters, what you actually want is a small font which is not readable unless your eyes are relaxed and moistened by sufficient blinking.