I have been to 3 opthamology specialists and they say I have a posterior vitreous detachment. What I have is gray hollow rings that move with my vision. I questioned them about it and they said no weiss rings because they move around your vision. I feel like they are looking for something that is not there. I have had these rings for over a year, but my vision is good, what I see through and around the rings. Are there any specialists that deal with weiss rings, I want another opinion. I don't want them putting me on drops if not necessary.