I've never really strongly seen the moon illusion either - maybe it looks just a tiny bit bigger, but certainly not significantly bigger. I get the same thing

I've never really strongly seen the moon illusion either - maybe it looks just a tiny bit bigger, but certainly not significantly bigger. I get the same thing with the Ebbinghaus illusion you linked to - there seems to be a very slight difference between the diameter of the two centre circles, but only perhaps 1/4 of the width of the lines. If I stare at it for a while, even that difference goes away. Is that what you see too, or is the effect stronger?