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A posterior vitreous detachment (PVD) is a condition of the eye in which the vitreous membrane separates from the retina. [1] It refers to the separation of the posterior hyaloid membrane from the retina anywhere posterior to the vitreous base (a 3–4 mm wide attachment to the ora serrata).
Peripheral (posterior) vitreous detachment occurs when the gel around the eye separates from the retina. This can naturally occur with age. However, if it occurs too rapidly, it can cause photopsia which manifests in flashes and floaters in the vision. Typically, the flashes and floaters go away in a few months.
Retinal detachment is typically painless, with symptoms often starting in the peripheral vision. [3] [9] [10] Symptoms of retinal detachment, as well as posterior vitreous detachment (which often, but not always, precedes it), may include: [3] [4] [9] [10] [12] Floaters suddenly appearing in the field of vision or a sudden increase in the ...
As one gets older, pockets of fluid can develop in the vitreous. When these pockets develop near the back of the eye, the vitreous can pull away from the retina and possibly tear it. [2] Posterior vitreous detachment accounts for 3.7–11.7% of vitreous hemorrhage cases. [1]
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If these liquid pockets are close enough to the interface between the vitreous gel and the retina, they can cause complete separation of the vitreous from the retina in a normally occurring process in older humans called posterior vitreous detachment (PVD). PVD in of itself is not dangerous and a natural process. [citation needed]
Vitreous hemorrhages are treated by targeting the underlying cause, such as with laser photo-coagulation for proliferative diabetic retinopathy or retinal detachment. Occasionally, a hemorrhage does not resolve on its own, and vitrectomy surgery —which removes the vitreous and replaces it with a saltwater solution similar to the eye's natural ...
Epiretinal membrane or macular pucker is a disease of the eye in response to changes in the vitreous humor or more rarely, diabetes.Sometimes, as a result of immune system response to protect the retina, cells converge in the macular area as the vitreous ages and pulls away in posterior vitreous detachment (PVD).