Eye floaters are extremely common. Most people develop them at some point, especially as they get older. But they barely notice them until a little speck or squiggle drifts across a blank wall or a bright sky, then disappears the moment they try to look straight at it.
For most of us, that’s the entire story: a normal, slightly odd part of having eyes that’s more curious than concerning. But floaters can occasionally be the first sign of something more serious, which is why it’s worth knowing the difference.
This guide covers what eye floaters actually are, what causes them, which symptoms mean you should get checked straight away and what treatment, if any, actually helps.
What Are Eye Floaters?
The inside of your eye is filled with a clear, jelly-like substance called the vitreous. It helps the eye hold its shape and keeps light travelling cleanly from the lens to the retina at the back.
As the vitreous ages, it slowly changes texture. Parts of it liquefy while other parts clump together into tiny strands and fibres. Those clumps aren’t perfectly transparent, so they cast small shadows on the retina as light passes through. What you’re actually seeing when you notice a floater isn’t the clump itself. It’s its shadow.
Because the clumps are suspended in gel, they drift when your eye moves and settle when it stops, which is exactly why floaters seem to dart away the moment you try to focus on one.
What Do Eye Floaters Look Like?
Floaters show up in a few recognisable shapes:
- Small dark or grey dots
- Squiggly lines or thread-like strands
- Cobweb shapes
- Faint rings or circles
- Tiny clear bubbles that catch the light
They’re usually most visible against plain, bright backgrounds: a clear sky, a white wall or a blank document on screen. They’re far less noticeable against a busy or dimly lit scene. Most people describe them as drifting slowly across their field of vision and shifting position with each blink or eye movement.
What Causes Eye Floaters?
There are several reasons floaters appear, and age-related change in the vitreous is by far the most common one.
- Posterior vitreous detachment (PVD). As the vitreous shrinks with age, it can pull away from the back of the eye. This is the leading cause of new floaters, particularly from your 50s onward.
- Short-sightedness (myopia). People with myopia tend to develop vitreous changes and floaters earlier than people with normal vision.
- Eye injury or trauma. A blow to the eye can disturb the vitreous and cause new floaters to appear.
- Previous eye surgery. Cataract surgery in particular can change the structure of the vitreous.
- Diabetic retinopathy. Bleeding from abnormal blood vessels in the retina can appear as new floaters or dark spots.
- Uveitis. Inflammation inside the eye can release inflammatory cells and debris into the vitreous, which shows up as floaters.
- Retinal tears. A tear in the retina can release pigment and blood into the vitreous, causing a sudden shower of new floaters.
Are Eye Floaters Normal?
Yes, for most people, most of the time. Floaters are extremely common and rarely a sign of a serious problem on their own. According to the American Society of Retina Specialists, PVD-related floaters are rare before the age of 40 and become increasingly common with advancing age, which lines up with what we see day to day in the clinic.
A handful of longstanding floaters that have looked the same for months or years and don’t interfere with your vision are almost always harmless. What matters far more than having floaters is whether anything about them has changed recently.
When Should You Worry About Eye Floaters?
Gradual, stable floaters are one thing. A sudden change is another.
Book an appointment promptly if you notice:
- A sudden increase in the number of floaters, especially if it happens over hours or days
- New floaters appearing alongside flashes of light
- One or more floaters that are new and noticeably larger or darker than what you’re used to
- Any change that’s affecting how clearly you can see
None of these automatically means something serious is happening, but they’re exactly the signs that warrant a same-day or next-day check rather than a wait-and-see approach.
Retinal Detachment Warning Signs You Shouldn’t Ignore
A small number of floater cases are linked to a retinal tear or detachment, which is a genuine eye emergency. The retina doesn’t have pain receptors, so it won’t hurt, which is part of why these warning signs matter so much.
Treat any of the following as urgent, same-day symptoms:
- A sudden shower of many new floaters all at once
- Flashes of light, especially in your side vision, that weren’t there before
- A dark curtain, shadow or veil spreading across part of your vision
- A sudden drop in vision or a section of your visual field going missing
Most people who experience PVD (around 85%) never go on to develop complications, and symptoms usually settle within a few months. That’s genuinely reassuring. It’s also exactly why an urgent check matters: an optometrist can tell the difference between the harmless 85% and the smaller group who need same-day treatment, and there’s no reliable way to tell which group you’re in from home.
Do Eye Floaters Go Away?
Often, yes, though not always completely. Floaters caused by PVD tend to become less noticeable over the following weeks to months. Part of this is the vitreous settling, and part of it is your brain gradually learning to filter the shadow out, the same way it filters out the shadow of your own nose in your peripheral vision.
Some floaters fade into the background rather than vanishing outright. If a floater has stayed exactly the same for a long time and isn’t bothering you, that’s a sign it’s settled rather than something to keep worrying about.
If what you’re noticing is less like a drifting spot and more like wavy or missing patches in your central vision, that’s a different concern altogether, and worth checking with an Amsler grid rather than assuming it’s a floater.
How to Get Rid of Eye Floaters: Treatment Options
When No Treatment Is Needed
Most floaters don’t need any treatment at all. If they’re longstanding, not increasing and not accompanied by flashes or vision changes, the usual advice is simply to monitor them and mention them at your next routine eye exam. There’s no eye drop, supplement or exercise with good evidence behind it for dissolving floaters, so it’s worth being sceptical of anything that claims otherwise.
When Treatment May Be Considered
For floaters that are dense, persistent and genuinely affecting quality of life, two options exist, though both are reserved for a small minority of cases and come with their own risks:
- Laser vitreolysis, which uses a laser to break up larger floaters into smaller, less noticeable fragments
- Vitrectomy, a surgical procedure that removes the vitreous gel and replaces it with a clear solution, typically only considered when floaters are severe
Neither is a routine fix for the odd wispy floater. Your optometrist can help you understand whether your floaters fall into the small category where these options are worth discussing with an ophthalmologist, or the much larger category where they’re simply something to live with.
Can Eye Floaters Be a Sign of Something Else?
Eye floaters are sometimes confused with other visual disturbances that come from a completely different part of the eye.
Floaters vs Flashes and Halos at Night
Floaters come from the vitreous. Halos and glare around headlights or streetlights usually come from the front of the eye, often the cornea or lens, and are commonly linked to causes like an out-of-date prescription or early cataracts. If your main complaint is glare or halos at night rather than drifting spots, our guide to night driving problems, glare and halos covers that separately.
Floaters vs Migraine Visual Disturbances
A migraine aura can produce shimmering zigzag lines or blind spots that build over 20 to 30 minutes and usually affect both eyes at once, often followed by a headache. That’s a different mechanism entirely, originating in the brain rather than the eye, and it typically resolves on its own within an hour. True floaters, by contrast, are specks or strands that drift with eye movement and tend to affect one eye more than the other.
For a wider look at how different eye symptoms connect, our guide to common eye problems and solutions is a useful starting point.
When to See an Optometrist About Eye Floaters
A comprehensive eye exam is the only reliable way to know what’s actually causing your floaters, including a proper look at the retina, which isn’t something you can assess by staring at a wall.
Book an eye exam if:
- You’re noticing floaters for the first time
- Your floaters have recently increased or changed
- You’re experiencing flashes of light
- Any part of your vision looks dark, missing or curtained off
- It’s simply been a while since your last comprehensive check
If you’re unsure whether what you’re experiencing counts as a warning sign, our guide on 10 signs you shouldn’t ignore covers the broader picture of when it’s time to book.
At EyeSelect, a comprehensive exam includes a proper look at the retina using retinal imaging, so we can tell you with confidence whether your floaters are the harmless kind or something that needs closer attention. Book an appointment at Browns Plains or Forest Lake, and if your symptoms came on suddenly, call ahead so we can see you the same day.
Frequently Asked Questions About Eye Floaters
What is the major cause of eye floaters?
Age-related change in the vitreous, known as posterior vitreous detachment, is the most common cause. It happens as the gel inside the eye naturally shrinks and pulls away from the retina, usually from the 50s onward.
How do you get rid of floaters?
Most floaters don’t need treatment and become less noticeable over time as your brain adapts. For a small number of severe cases, laser vitreolysis or vitrectomy surgery may be considered, but these carry real risks and aren’t used for everyday floaters.
When should you worry about floaters?
Worry less about having floaters and more about sudden change. A rapid increase in floaters, new flashes of light or a curtain or shadow across your vision are all reasons to get checked the same day.
Do eye floaters ever go away?
Many become far less noticeable within a few months as the vitreous settles and your brain filters them out, though some remain faintly visible long term. A floater that’s stayed the same for a long time is generally nothing to worry about.
Are eye floaters normal?
Yes. Most adults develop some floaters as part of normal ageing, and they’re rare before age 40. Having floaters isn’t itself a red flag. A sudden change is what matters.
Can eye floaters be a sign of retinal detachment?
Occasionally, yes. A sudden shower of new floaters combined with flashes of light or a shadow spreading across your vision can signal a retinal tear or detachment, which needs same-day assessment.
This article is for educational purposes and is not a substitute for professional optometric advice. Book an appointment for a personalised assessment.