---
title: What is posterior vitreous detachment?
description: "[Posterior vitreous detachment (PVD)](https://bluefinvision.com/blog/what-is-posterior-vitreous-detachment-pvd/) occurs when the jelly-like vitreous separates from the retina at the back of the eye. It is a common age-related change but can occasionally lead to retinal tears. ## Symptoms of PVD People often notice new…"
url: "https://bluefinvision.com/knowledge-base/topics/conditions-diseases/what-is-posterior-vitreous-detachment/"
updated: "2026-01-11"
category: "Conditions & Diseases"
---

# What is posterior vitreous detachment?

[Posterior vitreous detachment (PVD)](https://bluefinvision.com/blog/what-is-posterior-vitreous-detachment-pvd/) occurs when the jelly-like vitreous separates from the retina at the back of the eye. It is a common age-related change but can occasionally lead to retinal tears.

## Symptoms of PVD

People often notice new floaters, flashes of light or a cobweb-like shadow. Symptoms usually settle over time as the vitreous repositions and the brain adapts to the floaters.

- Most PVDs do not cause permanent vision loss
- Sudden showers of floaters or a curtain in the vision need urgent review
- The other eye often develops a PVD at a later stage
- Retinal examination with dilating drops is used to exclude tears