What Is the Vitreous? And What Happens During a Posterior Vitreous Detachment?
As we age, changes in our eyes are common—some expected, some more concerning. One of the most frequently encountered changes is a posterior vitreous detachment (PVD). While often harmless, it's important to understand what it is, what symptoms to watch for, and when to seek care.
Understanding the Vitreous
The vitreous is a clear, gel-like substance that fills the space between the lens and the retina in the back of the eye. It helps the eye maintain its round shape and allows light to pass through to the retina, where vision is processed.
Over time, the vitreous naturally begins to shrink and lose its gel-like structure. When this happens, it can pull away from the retina—a process known as posterior vitreous detachment.
What Is a Posterior Vitreous Detachment (PVD)?
A PVD is a common condition, especially in people over 50. In most cases, it’s a normal part of aging and does not threaten your vision. However, in some cases, it can lead to more serious issues, such as a retinal tear or detachment, which requires prompt diagnosis and treatment with a retinal specialist.
Common Symptoms of PVD
Many patients with a posterior vitreous detachment notice:
- New floaters – small shapes that drift through your field of vision, often described as cobwebs, specks, or strings.
- Flashes of light – brief flickers, usually in the peripheral vision, especially in low-light conditions.
- A sudden increase in floaters, especially if they appear in a "shower."
These symptoms often come on suddenly and may affect one eye at a time.
When to Be Concerned
While floaters and flashes can be part of a typical PVD, some symptoms may indicate a more serious condition, such as a retinal tear or retinal detachment. Contact us immediately if you experience:
- A sudden burst of floaters or flashing lights
- A dark curtain or shadow in your peripheral or central vision
- Any noticeable loss of vision
Prompt evaluation can be vision-saving.
Who Is at Risk?
PVD is more likely to occur with:
- Age over 50
- High myopia (nearsightedness)
- History of eye trauma or surgery (such as cataract surgery)
- Inflammatory eye conditions
- Diabetic eye disease
If you’re at higher risk or have experienced any of these symptoms, we recommend a comprehensive dilated eye exam.
Concerned About New Floaters or Flashes?
If you’re experiencing any sudden changes in vision, don’t wait. At Retina Consultants San Diego, our experienced team is here to provide prompt, thorough evaluation and care. We take symptoms of a retinal tear or retinal detachment seriously and will get you right in to see one of our world class retinal specialists.