Flashes and Floaters: When to Be Concerned About Changes in Your Vision

Seeing Flashes or Floaters? Here’s What You Need to Know

Imagine going about your day when you suddenly notice flashes of light or floating shapes drifting across your vision. It might feel alarming—especially if it’s the first time. Many patients call us right away, understandably worried. One common cause of these symptoms is a posterior vitreous detachment (PVD), a condition we’ll explore in detail below.

What Is a Posterior Vitreous Detachment?

A PVD occurs when the vitreous gel, which fills the back of the eye, begins to separate from the retina—the light-sensitive layer lining the back of your eye. As we age, the vitreous becomes more liquefied, and this separation is a natural part of the aging process.

 

During a PVD, many patients notice:

 

• New or increased floaters—tiny shapes that seem to drift in your field of vision
• Flashes of light, especially in peripheral vision
• A shadowy web or clump that moves with your eye movements

While PVD most commonly occurs after age 60, it can appear earlier in people who are nearsighted, have had eye surgery, or experienced eye trauma.

 

Is a PVD Dangerous?

In most cases, a PVD is harmless. However, the symptoms can mimic those of more serious conditions, like a retinal tear or retinal detachment, which require immediate treatment to prevent vision loss.

Here's what you should know:

 

• A retinal detachment occurs when the retina pulls away from its normal position, and it can lead to permanent vision loss if not treated promptly.
• Roughly 10–15% of patients who develop a PVD will experience a retinal tear or detachment.
• The risk is highest during the first 6 weeks after symptoms begin.

 

That’s why it's so important to schedule an eye exam immediately if you notice any new flashes or floaters. Early detection can protect your vision.

What Can Be Done About the Floaters?

Floaters caused by a PVD can be bothersome at first, but most people find that their brain adjusts over time and learns to ignore them. However, in rare cases where floaters significantly interfere with daily life, a surgical procedure called a vitrectomy can be considered. This involves removing the vitreous gel and replacing it with a clear solution—but like all surgeries, it carries risks and is typically reserved for severe cases.

 

What to Avoid After a PVD

Most people with a PVD can continue their normal routines, including:

 

• Reading and screen time
• Wearing makeup or contact lenses
• Light exercise and daily activities

 

However, we may recommend avoiding high-impact sports or activities for the first 4–6 weeks to reduce the risk of trauma to the eye during the most vulnerable period.

 

When to Call Us

If you experience:

• A sudden shower of floaters
• Bright flashes of light in your peripheral vision
• A shadow or curtain across part of your vision

Please contact our office immediately for a dilated eye exam. These may be signs of a retinal tear or detachment, and early diagnosis can make all the difference.

 Our team at Focal Pointe Eye Care is here to provide comprehensive, compassionate care—from early diagnosis to long-term vision management. If you’ve noticed new floaters or flashes, don’t wait. Schedule an appointment today.

About the Author

Dr. Megan Fisher is an optometrist at Focal Pointe Eye Care in West Chester, Ohio. She is dedicated to providing comprehensive eye care for individuals and families.