I find that after I use visine, I suffer a millisecond of paranoia "omg, what if someone at the visine plant got pissed off about their job and put some kind of acid in here?" and then my eyes get super itchy for about 5 minutes...but when I check them after that they are clear and white.....I'll put up with that pain especially when I find out I have to go out suddenly...I normally only toke when I have nowhere to go....