Hello. I had a vitrectomy to correct retina detachment about 7 months ago. My operated eye was dilated for 5 months afterwards. I was getting concerned but dr. said it was common. One day I looked and I had equal pupils. I don't recall how long I had taken the drops but I know I was off all of them within 3 weeks. I did have a scratched cornea where I had to do some antibiotic drops, also some inflammation and had 3 weeks of durezol. Regards, Jim