Obviously something is wrong, but often self diagnosis is a bad idea.
It's possible it's the contrast. The contrast on these is extreme. With a black background the phone looks like it's off. I mean, really you can't tell the difference. Add to this, very bright icons (and everything else), and it could cause strain. I noticed it right away. The contrast is so great you look away.
In other words,'brightness' is relative to the background. So effectively, the brightness on these is different altogether, particularly the edges of active things.
Now this is just lame speculation, but you can see something there. The reason I'm saying this is because of my intitial statement about self diagnosis being dangerous. I've really gotten all bent out of shape numerous times with this process. Bad idea. Just because some armchair know-it-all says it's PWM, doesn't mean anything.
You have these people saying, your conscious mind doesn't see flashing, but your eyes are effected, and they try to adjust (a losing battle, no doubt

). Is this accurate? I highly doubt it. "Scientist say". "It's been shown"."There's documentation" (I love that one). BS to the extreme. Is it possible this is true? Well, anything's possible. note: Those videos of the flashing, remind me of closeups of insects. All of a sudden it's a nightmare.
Am I just justifying keeping mine? Yes, absolutely (too late now

). Am I afraid of it? I'm afraid of everything. I just prefer being rational.
Frankly this whole thing bugs me. Since when does random Internet stuff become believable? You have all sorts of people talking about LED science and anatomy. Who are they? Just people, and not something you should take literally.
The Internet is a mine field with stuff like this. Enough people say it, it gets it's own Wiki page.