I had pink eye last month. My eye was extremely red, swollen and painful. I couldn't even touch it. I avoided the doctor for three days thinking it would get better but it got worse. I finally went and my doctor prescribed this eye drop for me.
I never realized medicated eye drops could make such a difference. Within a few hours, the swelling went down. It took another few days for the redness to completely go away but I'm sure it would have lasted much longer without the drops.