Could Your Eye Floaters Be a Symptom of Posterior Vitreous Detachment? What You Need To Know
While the condition is typically harmless, it can sometime lead to retinal detachment
Key Takeaways
- PVD affects 75 percent of people by age 65 and is a common eye condition with age.
- A black shadow in your peripheral vision is an emergency that could signal retinal detachment.
- Treatment may include observation, YAG laser vitreolysis or surgery for more severe cases.
One of the most common vision changes we face as we age is bothersome flashes and eye floaters. In some cases, the little streaks of light and black spots don’t mean anything, but other times they can be symptoms of a condition called posterior vitreous detachment (PVD). According to the Macular Degeneration Foundation, the condition, which sounds scarier than it is, affects 75 percent of people by the time they turn 65. But what exactly is PVD, and what are the symptoms that signal it could be something more serious We share everything you need to know below.
What is posterior vitreous detachment?
PVD is a common age-related eye condition where the gel-like fluid (called vitreous fluid or vitreous gel) in your eye shrinks and separates from the retina, the part of the eye that processes color and light. According to Dagny Zhu, MD, board-certified ophthalmologist and 1MD Nutrition Scientific Medical Advisory Board Member, it’s “not dangerous, and the subsequent floaters are just a nuisance.”
She does warn, though, that there are rare cases of posterior vitreous detachment that “lead to a retinal tear or detachment, which is a sight-threatening emergency.” (More on that below.)
Woman's World Answers
Posterior vitreous detachment symptoms to watch for
Some of the most common symptoms of PVD, according to Dr. Zhu, include:
- Flashes of light
- Floaters (specks floating across your vision)
- Seeing small gray or black dots, “spider webs” or larger gray clouds
- Experiencing black “sheets” that float across your vision like a “smudge” on a lens
The most common posterior vitreous detachment symptom, though, is eye floaters. “As their name suggests, floaters often move across the vision as the patient moves their eyes up, down and all around, and are most obvious when looking at a white or light-colored background, ” Dr. Zhu explains.
“Rarely, PVD can also cause a ‘flashing light’ sensation lasting a few seconds in the periphery of one’s vision,” Dr. Zhu says. “This represents the posterior vitreous detaching and causing pulling/tractional forces on the peripheral retina as it continues to detach.”
Who’s most at risk for posterior vitreous detachment?
Risk factors for posterior vitreous detachment you need to be aware of include age, nearsightedness (myopia) and prior eye surgery or trauma.
“Highly myopic eyes are more elongated than normal, which leads to the retina becoming more stretched and thinner than normal,” Dr. Zhu says. As a result, “the vitreous jelly does not adhere as well. It’s also why there’s a higher risk of retinal tears and detachments in highly myopic eyes—the ‘sticky’ vitreous jelly can take a thin piece of the retina with it as it detaches, causing a retinal hole or tear.”
When posterior vitreous detachment symptoms may signal something serious
While the vast majority of PVD cases are harmless and common during the aging process, in rare cases, symptoms of posterior vitreous detachment could be a sign of an eye emergency.
“A black shadow in the peripheral part of one’s vision is an emergency and signals the fact that not only the vitreous jelly, but the retina itself has begun to detach,” Dr. Zhu cautions. “This retinal detachment can cause permanent vision loss if not fixed by a vitreoretinal surgeon immediately.” In short, if you notice this alarming symptom, seek urgent medical care.
How PVD is diagnosed and treated
If you notice any eye floaters, flashes or other changes in your vision, visit your ophthalmologist for an eye exam. Your doctor can run a series of tests, including an eye ultrasound, dilation drops, scans and even vision tests, to determine if you’re experiencing posterior vitreous detachment symptoms.
After the diagnosis, treatment can begin. According to Dr. Zhu, that can include “observation to see if it is better over a few months and years as the floaters settle downward or the brain neuroadapts and ‘ignores’ the floaters.”
If time alone doesn’t work, Dr. Zhu says that your doctor may recommend YAG laser vitreolysis (aka “laser floater removal”), which is a non-invasive, outpatient procedure that breaks up the floaters in the eye over one or more laser sessions.
“At my practice, for bothersome floaters, I will perform YAG laser vitreolysis as first-line treatment, as the majority of cases can be resolved or significantly improved with this in-office, minimally invasive procedure,” she says. “For larger diffuse floaters that do not respond well to YAG laser vitreolysis, I refer [patients] to a vitreoretinal surgeon for vitrectomy, which is curative but comes with greater risks including infection, retinal membrane formation and even retinal detachment.”
The bottom line on PVD
While a posterior vitreous detachment diagnosis may sound alarming at first, know that it’s more common than you think and typically more of a nuisance than it is something to worry about. By knowing the symptoms—including when to seek urgent care—and recognizing that there are beneficial treatments that can help, you’re taking the first step toward protecting your vision for years to come.
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