Diseases of the Retina / Vitreous: Posterior Vitreous Detachment (PVD)
What is a Posterior Vitreous Detachment (PVD)?
The back of the eye is made up of the retina and vitreous. The retina is the light-sensitive layer of tissue that lines the back of the eye wall.
The vitreous is the gel-like substance that allows the eye to maintain its shape while allowing light to enter the retina.
Inside the vitreous are millions of thin fibers that interlock and connect to the retina. During the aging process, the vitreous begins to shrink, causing the thin fibers to pull on the surface of the retina. When those fibers are pulled too tight, they break, allowing for the vitreous to detach from the retina.