My husband had it on one eye and experienced no problems. He did have a general anaesthetic and had to have a stent in for three weeks afterwards which was very uncomfortable, I don’t know if this is standard procedure or just something he had to have, it’s a while ago so I can't remember. It has improved the watering in that eye. He couldn't have It on the other eye as the duct was twisted and it could have resulted in more problems than benefits.
Do you still wear you original wedding and engagement ring