Floaters in your eye: when to worry — and the signs of retinal detachment (UK 2026)

Are floaters normal? What they actually are

The eye is filled with a clear gel called the vitreous. Tiny clumps of collagen fibres inside the gel cast shadows on the retina, which is why you see them as dots, threads, cobwebs or rings drifting in your field of view. They are most obvious against a pale background — a blue sky, a white wall, a screen.

Floaters become much more common with age because the vitreous gel slowly liquefies and shrinks, a process called posterior vitreous detachment (PVD). By the age of 70, around two-thirds of people have had a PVD. Most PVDs are uneventful: a few new floaters, sometimes a single ring-shaped (Weiss ring) floater, and over weeks the brain learns to ignore them.

Long-standing floaters that have been the same for years and drift with eye movement are almost always benign. They do not need treatment.

Red-flag symptoms: same-day eye assessment

Any of these need a same-day specialist look. Do not wait for a routine GP appointment.

• A sudden shower of new floaters — dozens of new dots, threads, "smoke" or "soot" in the vision over hours or a day or two.
• Flashing lights (photopsia) — brief arcs, sparkles or lightning-bolt streaks, especially in the side vision and noticed in dim light. Photopsia means the retina is being tugged.
• A dark curtain, shadow or "veil" across part of your vision — usually starts in the peripheral vision and spreads centrally. Treat as retinal detachment until proven otherwise.
• A sudden drop in central vision — even partial — treat as macular involvement until proven otherwise.
• A sudden one-sided change in someone over 50, particularly if short-sighted (myopic) or after cataract surgery.
• Eye trauma followed by floaters or flashes — same-day check.

The faster you are seen, the better the outcome. A retinal tear caught early can be sealed with a 10-minute clinic laser. Once the retina detaches, treatment becomes more complex and central vision can be lost permanently if the macula peels off.

PVD vs retinal tear vs retinal detachment — what's the difference?

Key point: the symptoms of a benign PVD and a sight-threatening retinal tear can be identical at the start. The only safe approach is a dilated examination by an ophthalmologist within 24 hours.

When to call 111, when to go to A&E, when private is faster

• 999 / A&E now — sudden complete loss of vision, severe eye pain with vomiting (possible acute angle-closure glaucoma), eye trauma with vision change.
• NHS 111 / urgent eye care now — sudden shower of floaters, flashing lights, curtain or shadow. Most areas have a same-day urgent eye care pathway via 111 or your local optometrist (CUES / MECS scheme).
• Local optometrist (high-street optician) — can perform a dilated examination same-day and refer urgently. Many offer the NHS Community Urgent Eyecare Service (CUES) free of charge.
• Private retinal specialist — if your local NHS rapid access pathway is full, on a weekend or evening, or you want named-consultant continuity. Private retinal consultations are typically same-day or next-day. UK 2026 fee: £195–£350.

If you are unsure, the safest call is: contact your high-street optician first and ask for a same-day examination. They will tell you if you need to be referred urgently and to where.

What happens at a retinal assessment

A specialist retinal assessment for new floaters and flashes takes 30–60 minutes. Bring sunglasses — you will be dilated and your vision will be blurry for 4–6 hours. Do not drive home.

• Visual acuity and pinhole — baseline vision in each eye.
• Slit-lamp examination — the front of the eye, vitreous and posterior pole.
• Dilated fundus examination — drops widen the pupil; the consultant uses an indirect ophthalmoscope to look at the entire retina, including the far periphery, often with scleral indentation (gentle external pressure to bring the very edge of the retina into view).
• OCT (optical coherence tomography) — a non-contact scan that shows the macula in cross-section; rules out subtle macular involvement.
• B-scan ultrasound — used if a vitreous haemorrhage stops a clear view of the retina, to rule out an underlying tear or detachment.
• Wide-field retinal photography — a baseline image for comparison if a follow-up is needed.

At the end the consultant will tell you which of the three pictures (PVD only, tear, detachment) you have and what to do next.

Treatments for retinal tears and detachments

Laser retinopexy — for retinal tears without detachment

An in-clinic argon laser is used to "spot-weld" a barrier of laser burns around the tear. The procedure takes about 10 minutes, is done with anaesthetic drops, and is well tolerated. Success rate at preventing progression to retinal detachment is about 90 %. You can usually return to normal activity the next day.

Vitrectomy with gas or oil tamponade — the most common detachment surgery

In theatre, three tiny ports are used to remove the vitreous gel, drain the fluid under the retina, treat tears with laser, and fill the eye with an expanding gas bubble (SF6 or C3F8) or silicone oil to hold the retina against the back wall while it heals. Anaesthesia is usually local with sedation. Posturing (holding a specific head position so the bubble presses on the tear) is usually required for several days. Gas bubbles disappear by themselves over 2–8 weeks; silicone oil needs a second short operation to remove.

Scleral buckle

A silicone band is placed on the outside of the eye to indent the wall and close the tear. Often used in younger patients with peripheral tears. Performed under local or general anaesthetic.

Pneumatic retinopexy

A simpler office or day-case procedure for selected superior retinal detachments: a gas bubble is injected, the patient postures to push the retina back, and the tear is treated with laser or cryotherapy.

UK 2024–2026 BEAVRS national audit data show primary anatomical success rates of about 85–90 % for vitrectomy and around 80 % for scleral buckle in primary retinal detachment.

Recovery: what to expect

• Day 0–1 — mild ache, gritty feeling, blurry vision, "snow-globe" view through the gas bubble. Eye drops (steroid + antibiotic) start the next day.
• Days 2–7 — posturing as instructed (typically face-down or cheek-on-pillow for 50 minutes of every hour for 5–7 days). The bubble shrinks daily.
• Weeks 2–4 — gas bubble around half size; vision returns gradually as the bubble drops below the visual axis. You must not fly, travel above ~1000 m altitude, or have nitrous oxide anaesthesia until the bubble is gone (your surgeon will confirm).
• Weeks 4–8 — bubble disappears; refraction stabilises. Most people can return to office work after 2–3 weeks; manual work and contact sports after 4–6 weeks.
• 3–6 months — final visual outcome. Macula-on detachments have the best outcomes (often 6/9 or better); macula-off detachments improve more slowly and final vision depends on how long the macula was off.

Prognosis & risk to the fellow eye

The single biggest predictor of visual recovery is whether the macula (the central reading part of the retina) was still attached at the time of surgery. Macula-on detachments treated within 24 hours typically recover near-normal central vision. Macula-off detachments recover variably; the longer the macula has been off, the lower the final visual acuity.

About 10 % of people who have had a retinal detachment in one eye will develop one in the other eye over their lifetime. After a PVD or retinal detachment in one eye, your retinal specialist will examine the fellow eye carefully and may recommend prophylactic laser to any high-risk lesions found (lattice degeneration with holes).

Frequently asked questions

When are floaters dangerous?

Floaters are dangerous when they appear suddenly in a shower, are accompanied by flashing lights, or come with a curtain or shadow across the vision. Long-standing, slowly-changing floaters that drift with eye movement are almost always benign. Any sudden new symptom needs a same-day dilated retinal examination.

Can floaters mean a stroke?

Floaters themselves do not indicate stroke. Sudden painless loss of vision, especially affecting one half of the visual field in both eyes, can indicate a stroke (occipital or visual pathway) and is a medical emergency — call 999. A sudden curtain in one eye can be either a retinal detachment or a vascular event (transient ischaemic attack, central retinal artery occlusion); both need same-day assessment.

How quickly can a retinal tear become a detachment?

Hours to days. About one in three untreated symptomatic retinal tears progress to a retinal detachment, usually within 6 weeks. This is why every shower of new floaters and flashes needs a same-day dilated examination — if a tear is found, in-clinic laser retinopexy reduces the risk of detachment to under 5 %.

Are floaters worse after cataract surgery?

Some patients notice floaters more after cataract surgery because the new clear intraocular lens lets light reach the retina more efficiently. Cataract surgery also slightly increases the lifetime risk of PVD and retinal detachment, particularly in highly short-sighted (high myope) eyes. Any new floaters or flashes after cataract surgery need a same-day assessment.

Do floaters ever go away on their own?

Some do. After a posterior vitreous detachment, floaters are most noticeable in the first weeks then settle as the brain adapts and the floaters drift out of the central line of sight. Persistent visually-disabling floaters in long-standing PVD can be treated with vitrectomy (very rarely required) or YAG laser vitreolysis (selected cases only); both are private procedures with strict patient selection.

Do I need a GP referral for a private retinal assessment?

No. You can self-refer or, faster still, ask your high-street optician for a direct private referral. If you are insured (Bupa, AXA, Aviva, Vitality, WPA) you usually need a GP or optician referral letter to satisfy your insurer's authorisation process.

How much does a private retinal consultation cost in the UK in 2026?

UK 2026 private retinal consultation fees are typically £195–£350. The fee usually includes the consultant's time, slit-lamp examination, dilated fundus examination and OCT. Wide-field retinal imaging and B-scan ultrasound are sometimes included and sometimes charged extra (£50–£150 each). Treatment fees (laser, surgery) are quoted at the consultation.

What is the success rate of retinal detachment surgery?

UK 2024–2026 BEAVRS national audit data show primary anatomical success rates of about 85–90 % for vitrectomy and around 80 % for scleral buckle. About 10–15 % of patients need a second operation. Final visual outcome depends mainly on whether the macula was attached at the time of surgery and the duration of any macular involvement.

Can I fly after retinal detachment surgery?

Not while a gas bubble is present. SF6 bubbles last about 2 weeks, C3F8 bubbles 6–8 weeks. Flying or going to altitude with a gas bubble in the eye causes the bubble to expand catastrophically and can permanently damage the eye. Your surgeon will confirm when the bubble is fully resorbed and flying is safe. Silicone oil is not affected by altitude.

What is the risk to my other eye?

About 10 % of people who have had a retinal detachment in one eye develop one in the other eye over their lifetime. Your retinal specialist will examine the fellow eye carefully at the time of surgery and at follow-up; high-risk peripheral lesions can be treated prophylactically with laser.

Sources & methodology

• Royal College of Ophthalmologists. Retinal Detachment Commissioning Guidance, 2024.
• NICE NG150. Acute eye conditions: assessment and referral.
• BEAVRS UK National Vitreoretinal Audit, 2024–2026 reports.
• NHS England. Community Urgent Eyecare Service (CUES) specification, 2024.
• The Royal College of Ophthalmologists. Acute posterior vitreous detachment, retinal tears and retinal detachment: information for patients.
• General Medical Council (GMC) and Care Quality Commission (CQC) standards for UK ophthalmic services.

Reviewed by a UK GMC-registered consultant vitreoretinal surgeon. This article is for information only and is not a substitute for personalised medical advice. If you have any of the red-flag symptoms above, seek a same-day examination.