Yes dude, I screwed up my eyes already from using Clear Eyes(redness relief) for a few months nearly daily.
Now, even after a year, even just 1 use of it for me, I'll get rebound. The rebound is I get clear eyes, but for days later a blotched piece of my eye is red and I can't see as well if I use them now.
So for me, I just have red eyes, it's fine, they feel fine.

Dave (slightly :stoned