What Is a Posterior Vitreous Detachment?
Written By: Daniel Porter
Sep. 01, 2017
The middle of the eye is filled with a substance called vitreous. The vitreous is normally attached to the retina, in the back of the eye. A posterior vitreous detachment (PVD) is when the vitreous pulls away from the retina.
What causes a PVD?
As we age, the vitreous changes. It becomes less solid and more liquid-like. It shrinks and pulls away from the back of the eye. The vitreous is attached to the retina by millions of microscopic fibers. When enough of these fibers break, the vitreous separates completely from the retina, causing a PVD.