What is posterior vitreous detachment?
Posterior vitreous detachment is a common eye condition caused by natural changes to the jel-like substance (vitreous) that fills the eye as we get older. As we age, the vitreous becomes more liquid, and the fibres within it tend to clump together and shrink, leading to its separation from the retina.
What causes posterior vitreous detachment?
PVD is primary an age-related phenomenon but can also occur due to certain risk factors and underlying conditions:
- Eye trauma
- Myopia – if you suffer from this you are at higher risk of developing PVD, as the elongated shape of the eyeball can contribute to the jel-like substance pulling away from the retina.
- Family history - There may be a genetic predisposition to PVD, with a higher likelihood of occurrence in individuals with a family history of the condition.
Posterior vitreous detachment symptoms
A tell‑tale sign of posterior vitreous detachment is a sudden increase in the number of floaters in your vision, as well as flashes of light. Some people describe the floaters looking like a cobweb across their vision, although you might see them as dots, strands, or squiggles.
You should see your Execuspecs optometrist or ophthalmologist within 24 hours if you experience any of these symptoms:
- Blurred vision
- An increase in the number of flashing lights you see
- A sudden increase in the number and size of floaters
- The appearance of a dark curtain moving across your vision
Treatment for posterior vitreous detachment
This condition is a normal part of ageing and there is no specific treatment needed for posterior vitreous detachment – people will find that their symptoms start to get better after a couple of months. In fact, your brain cleverly learns to ignore the floaters in your vision, so you’ll find that they won’t bother you as much.
Treatment is only necessary when there is a risk to the health of your retina, in which case you’ll be referred for urgent treatment to repair a retinal tear, hole, or detachment.
