dry eye disease
"The morning after I first took the drops, my eyes itched severely and swelled up quite a bit. I felt ill all day, kind of like when you are coming down with the flu. All the subsequent uses have made my eyes burn and my vision blurry, but I have also noticed in the last few days that I am having serious trouble remembering things. We all are forgetful from time to time, but this is enough that it is disturbing. I don't know if I can or even should keep using the product..."