conjunctivitis, allergic
"Initially I really liked this medication.  Much less initial sting after application than the drops I used before.  However, after about two weeks of use, I had an allergic reaction that caused my eyes to appear as if I had conjunctivitis.  Didn't realize it was the Lastacaft and went to the doctor for anti-biotic drops.  After my eyes cleared up in two or three days, I again applied Lastacaft and immediately looked like my eyeballs were bleeding.  My vision got blurry and my eyes were very sensitive to light.  I am one of the <4% with an allergic reaction. "