Ah, I see what you mean about the eyes. Yeah I can see how that makes sense. Very interesting that there isn't a noticeable or consistent "trigger" that we all identify. I like your suggestion of tracking stuff that was going on before. I've tried doing that sort of retroactively, but haven't come up with any useful correlations. Also, I stare at a computer screen 12 hours a day most days, but this happened to me mostly as a child, when I was on the computer much less. So why does it clearly affect you and doesn't seem to affect me, yet we experience the same phenomenon? I am so mystified.
Also. WOW over a hundred times! That's intense!