If the floaters appear in the shape of a circle or oval, this is called a Weiss ring. The other sign of PVD is flashes of light in your peripheral vision. Flashes are usually most noticeable in ...

The diagnosis of a posterior vitreous detachment (PVD) was established by the existence of a Weiss ring. If a Weiss ring was absent, then a real-time ultrasound was performed using the OTI-2000 ...

This is also called posterior vitreous detachment (PVD), and is initiated ... macular holes in patients with vitreous detachment. A Weiss ring (the ring of attachment around the pupil) is seen ...