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Floaters in the Eye: What They Are, Causes, Symptoms and Treatment
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Floaters (noun; also called eye floaters, vitreous floaters or, in French, mouches volantes, "flying flies"): small specks, dots, threads, rings or cobwebs that drift across your vision. They are not objects on the surface of the eye but shadows cast on the retina by tiny clumps or strands in the vitreous, the clear gel that fills the back of the eye. Floaters are common and usually harmless, but a sudden shower of new floaters, especially with flashes of light or a dark shadow, needs an eye examination the same day.
Are my floaters an emergency? What to do first
Most floaters are a normal part of ageing. A new floater is different: it should be checked, because it can be the first sign of a tear or detachment of the retina. Use this table before you read on.
| What you notice | What it can mean | What to do |
|---|---|---|
| A floater you have had for months or years, unchanged | Usually long-standing vitreous change | Mention it at your next routine eye test |
| One or a few new floaters, no other symptoms | Often a harmless vitreous change, but it needs checking | Get examined promptly. The NHS advises an urgent optician appointment or NHS 111 for first-time floaters |
| A sudden increase in floaters, or many new ones at once | Possible retinal tear or detachment | Same-day examination by an eye doctor or eye emergency service |
| Floaters with flashes of light | The vitreous pulling on the retina | Same-day examination |
| A dark shadow, grey curtain or blurred area in your vision | Possible retinal detachment | Emergency: same-day care |
| New floaters after eye surgery or an eye injury, or with eye pain or blurred vision | Inflammation, bleeding or a retinal problem | Prompt examination |
If you are travelling, or planning treatment abroad, do not wait for a consultation with us. Seek care where you are now; we can review your report afterwards.
Floaters: key facts
- What they are
- Shadows of clumps or strands in the vitreous gel, cast onto the retina
- What they look like
- Dots, squiggly lines, threads, rings or cobwebs; they move when the eye moves and drift away when you try to look straight at them
- Most noticeable
- Against a plain, bright background such as a clear sky, a white wall or a computer screen
- Most common cause
- Age-related change in the vitreous, often ending in posterior vitreous detachment (PVD)
- Who is more likely to get them
- Older adults, people who are short-sighted (myopic), people who have had cataract surgery, and people with inflammation inside the eye
- Usual course
- They tend to fade and become less noticeable over time
- Main danger
- A retinal tear or detachment, which can cause permanent sight loss if not treated quickly
- Diagnosis
- Dilated eye examination
- Specialist
- Ophthalmologist, ideally a retina specialist; at Laser Istanbul Clinic, Doç. Dr. Muhammet Derda Özer (Associate Professor; retina, medical and surgical)
What causes floaters?
The vitreous is a clear gel, mostly water, held together by a fine mesh of collagen fibres and hyaluronan. When you are young it is smooth and fills the eye evenly. Over time the gel liquefies, and its collagen fibres clump into strands and fibres that scatter light. Those clumps cast the shadows you see as floaters, which is why floaters are especially common in short-sighted eyes.
Posterior vitreous detachment (PVD)
Ageing also weakens the attachment between the vitreous and the retina. Eventually the gel can peel away from the back of the eye. This is called posterior vitreous detachment, and it is the most common cause of floaters that bother people. According to EyeWiki, the American Academy of Ophthalmology's clinical wiki, PVD affects most eyes by the eighth decade of life, typically starting in the sixth or seventh decade. It begins earlier in short-sighted eyes and after cataract surgery.
The NHS describes PVD as a harmless process in most people. The catch is that, as the vitreous pulls away, it can sometimes tug on the retina hard enough to tear it. That is why a new floater needs checking even though most turn out to be harmless.
Other causes
Floaters can also come from problems that need treating in their own right:
- Retinal tear or retinal detachment (see below)
- Bleeding into the vitreous
- Inflammation inside the eye (uveitis) and eye infections
- Eye injury or eye surgery
The National Eye Institute (NEI) lists infections, injuries, uveitis, bleeding, vitreous detachment, retinal tears and retinal detachment among the more serious causes. In some people no obvious cause is found.
Floaters symptoms: what do they look like?
Floaters can look like small dark dots, circles, squiggly lines, threads or cobwebs. Their typical behaviour is a clue:
- They move as your eye moves, then drift, and slip away when you try to look straight at them.
- They are most visible against a bright, plain background.
- There may be one or several, and the pattern can change over time.
Floaters and flashes
Flashes look like flickering lights or lightning streaks. According to the AAO, they happen when the vitreous rubs or pulls on the retina, and they can last for weeks or even months. Flashes together with a sudden increase in floaters is the combination that most needs urgent attention.
Not every flash comes from the retina. Flashes from a migraine usually look like jagged lines, shimmering spots or heat waves and last up to 60 minutes, according to the AAO. If you are not sure which type you are having, have your eyes checked.
Floaters or retinal detachment? How to tell the difference
Floaters are a common symptom; retinal detachment is a serious condition. Ordinary floaters do not damage your sight. A detachment can.
| Ordinary floaters | Retinal tear or detachment | |
|---|---|---|
| Onset | Gradual, or a single new floater | Sudden floaters, often many at once |
| Flashes of light | Absent or occasional | Possible, especially with new floaters |
| Dark shadow or curtain | No | A shadow or curtain across the vision |
| Vision | Clear apart from the specks | Sudden blurring or changes to eyesight |
| Urgency | Check any new floater promptly | Emergency: same-day care |
How often does a new floater turn out to be a tear? A large study quoted in EyeWiki found retinal tears in 5.4% of people with symptomatic PVD and retinal detachment in 4.0%. When the PVD came with bleeding into the vitreous, tears were found in 50–70% of patients. These figures are the reason eye doctors examine every new floater carefully, not a reason to panic: most people with a new floater do not have a tear, but you cannot know that without a dilated examination.
Retinal detachment has its own entry: see our glossary page on retinal detachment. The NHS lists a higher risk if you are short-sighted, have had eye surgery such as cataract removal, have had an eye injury, or have family members who have had a detachment.
Another retinal condition you may read about alongside floaters is macular degeneration. It is a separate disease: the NHS describes it as affecting the middle (central) part of your vision, which makes reading and recognising faces difficult, whereas floaters are specks that drift across your view.
How are floaters diagnosed?
Floaters are diagnosed with a dilated eye examination, in which drops widen your pupil so the eye doctor can examine the vitreous and the retina for floaters and other problems (NEI). There is no scan or blood test for ordinary floaters: they are a symptom you report, and the examination looks for the cause.
What the examination looks for:
- Whether the vitreous has detached from the retina (PVD) and whether blood or pigment is floating in it.
- Whether there is a retinal tear or area of weakness that needs treatment, usually with laser or freezing (NHS).
- Whether another cause is present, such as inflammation or bleeding.
According to EyeWiki, when floaters begin with an acute PVD, an examination about one month after diagnosis is advised, and follow-up every 3–6 weeks for 3 months is recommended in acute symptomatic cases. A PVD typically develops in the other eye between 6 months and 2 years later, so that eye deserves attention too.
Ask your eye doctor which symptoms should make you come back sooner. A normal first examination does not rule out a problem developing later.
Do floaters go away? Floaters treatment
Most floaters need no treatment. The AAO says floaters tend to fade and become less noticeable over time, and the NHS says they often become less noticeable as you get used to them. The NHS says treatment is generally given only for a problem that could affect your vision, such as a retinal tear.
Observation
For ordinary age-related floaters, observation is the usual and recommended approach. If your floaters are not changing and your retina has been checked, nothing further is needed.
Treating the cause
If floaters are caused by another condition, that condition is treated: laser or freezing for a retinal tear, surgery for a detachment, treatment for inflammation, and so on.
Surgery and laser for floaters that affect daily life
The AAO notes that surgery to remove severe floaters carries risks and is seldom necessary or recommended. There are two options, and the evidence for them differs:
| Option | What it is | What the evidence says | Main points to weigh |
|---|---|---|---|
| Vitrectomy | The vitreous gel, with its floaters, is removed through tiny incisions | A 2016 review in Survey of Ophthalmology found a low-risk profile and an excellent success rate, particularly with small-gauge instruments and a limited core vitrectomy | Risks are real: in a 2025 study of 651 eyes with vision-degrading floaters, cataract was reported in 35.8% of the eyes that had surgery. Your surgeon should also explain the risk of retinal tear and detachment |
| Nd:YAG laser vitreolysis | A laser is used to break up floaters | The 2016 review found reported results ranging from 0% to 100% resolution and judged that only vitrectomy had proven value at that time. A 2026 meta-analysis of 15 studies (718 eyes) found better quality-of-life scores, stable visual acuity and infrequent adverse events, but called for larger randomised trials | The evidence is still developing, and results depend on the type and position of the floaters |
Neither is a routine option for ordinary floaters. If floaters make it hard to read, drive or work, a retina specialist can examine your eye, tell you whether the floaters are treatable, and explain the risks for your particular eye. No treatment should be offered without a full retinal examination first.
Treatment with us
At Laser Istanbul Clinic, retinal conditions are assessed and treated by our retina surgeon, Doç. Dr. Muhammet Derda Özer (Associate Professor), who treats medical and surgical retinal disease. For the urgent cause behind sudden floaters, see our page on retinal detachment surgery in Turkey. According to the NHS, repair can include vitrectomy, scleral buckling, a gas bubble (pneumatic retinopexy), or laser or freezing treatment for tears, depending on the case. {{Confirm whether the clinic offers vitrectomy or laser treatment for symptomatic floaters, and for which patients}}
Can floaters be prevented?
Not reliably. The NHS says retinal detachment cannot currently be prevented, and age-related vitreous change is a natural process. What you can do:
- Do not ignore new symptoms. Early treatment of a tear is what protects your sight.
- Have regular eye tests, especially if you are short-sighted or have had cataract surgery.
- Know the warning signs in the table at the top of this page.
When to see a doctor about floaters
Seek same-day care from an eye doctor or eye emergency service if you have:
- a sudden increase in the number of floaters, or a shower of new ones
- flashes of light, especially together with new floaters
- a dark shadow, grey curtain or blurred area in your vision
- floaters after an eye injury or eye surgery, or with eye pain or blurred vision
- a first-ever floater you cannot get examined promptly (the NHS advises an urgent optician appointment or NHS 111)
Book a routine appointment if you notice:
- floaters that are slowly getting more frequent or bothersome
- floaters that make reading, driving or screen work difficult
- new floaters in one eye after a PVD in the other eye
If you already have a diagnosis, such as a retinal tear, a detachment or a PVD, and want a second opinion on treatment, you can send your reports and scans for review before you travel.
Frequently asked questions
Floaters are small specks, dots, threads or cobwebs that drift across your vision. They are shadows of clumps in the vitreous gel, not objects on the surface of the eye. They are most visible against a bright, plain background.
The usual cause is ageing of the vitreous: the gel liquefies, its fibres clump, and eventually the gel can peel away from the retina (posterior vitreous detachment). Short-sightedness, cataract surgery, eye injury, bleeding and inflammation inside the eye can also cause floaters.
Most floaters are normal and harmless, particularly in older adults. A new floater, however, should always be checked by an eye professional, because some are caused by a retinal tear or detachment.
Floaters rarely vanish completely, but according to the AAO they tend to fade and become less noticeable over time, and the NHS says people often get used to them. Floaters that suddenly increase are not a normal fade: they need an urgent examination.
Seek same-day care for a sudden increase in floaters, flashes of light, or a dark shadow or curtain across your vision. These can signal a retinal tear or detachment, which can cause permanent sight loss if not treated quickly. In the UK, the NHS advises contacting an urgent optician appointment or NHS 111.
Floaters are a symptom, usually harmless, while retinal detachment is a condition in which the retina peels away from the back of the eye. A detachment typically brings sudden floaters, flashes and a dark shadow or curtain. See our guide to retinal detachment for the full picture.
In selected cases. Vitrectomy removes the vitreous gel and its floaters, and Nd:YAG laser vitreolysis aims to break them up, but the AAO says surgery to remove severe floaters carries risks and is seldom necessary or recommended. A retina specialist must examine the eye first to decide whether treatment is sensible.
With a dilated eye examination, in which drops widen the pupil so the doctor can examine the retina. This also checks for tears and other causes.
Age-related floaters cannot be prevented. What helps is regular eye tests and getting new symptoms checked quickly, so that any retinal tear is treated early.
Sources for the facts on this page
- American Academy of Ophthalmology. What Are Floaters and Flashes? https://www.aao.org/eye-health/diseases/what-are-floaters-flashes
- NHS. Floaters and flashes in the eyes. https://www.nhs.uk/conditions/floaters-and-flashes-in-the-eyes/
- NHS. Retinal detachment. https://www.nhs.uk/conditions/retinal-detachment/
- NHS. Age-related macular degeneration (AMD). https://www.nhs.uk/conditions/age-related-macular-degeneration-amd/
- National Eye Institute (NEI). Floaters. https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/floaters
- EyeWiki (AAO). Posterior Vitreous Detachment. https://eyewiki.org/Posterior_Vitreous_Detachment
- Milston R, Madigan MC, Sebag J. Vitreous floaters: etiology, diagnostics, and management. Survey of Ophthalmology 2016. PubMed: https://pubmed.ncbi.nlm.nih.gov/26679984/
- Boneva SK, et al. Clinical management of vision degrading myodesopsia from vitreous floaters: observation vs. limited refractive vitrectomy. Ophthalmology Retina 2025. PubMed: https://pubmed.ncbi.nlm.nih.gov/40381842/
- Alnajres A, et al. Nd:YAG laser vitreolysis for primary symptomatic vitreous floaters: a systematic review and meta-analysis. Ophthalmology Retina 2026. PubMed: https://pubmed.ncbi.nlm.nih.gov/42537719/
Seen new floaters, or told you have a retinal tear or detachment?
If you have sudden new floaters, flashes or a shadow, get examined today where you are. If you already have a diagnosis or a report and want a second opinion, send us your documents and scans. Doç. Dr. Muhammet Derda Özer, our retina surgeon, will review them and tell you which treatments may suit your eye, with no obligation. Surgery, if needed, takes place in a fully equipped, Ministry of Health–licensed operating theatre in Istanbul.
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