Normally I don't even notice this, which is why it has gone undetected for so many years. I'm trying out contact lenses and the doctor discovered it and said it could make the contacts less comfortable. He outlined a basic hygienic routine to reduce the symptoms that is similar to what wikipedia's article suggests.
I'm curious if anyone else has any experience with this. Apparently what I have is highly common, but I've never heard of it before recently.