Floaters in vision

Overview

Floaters are small shapes that drift across your field of vision. They may look like black or grey specks, strings, or cobwebs that move when you move your eyes. Most floaters are harmless and become less noticeable over time.

Yes, floaters are very common, especially as people get older. Many people experience them at some point in their lives.

Floaters can affect anyone, but they are more common in people over 50, those who are nearsighted (myopic), have had eye surgery or injury, or have diabetes.

Symptoms

Common symptoms

• Small specks, dots, or lines that drift across your vision
• Cobweb-like shapes that move when you move your eyes
• Shapes that are more noticeable when looking at a plain bright background, such as a white wall or a clear sky

Symptoms in children

• Children may not always report floaters, but they might complain of seeing 'bugs' or 'strings' in their vision.

Symptoms in older adults

• Floaters are more common and often appear as larger or more numerous shapes due to age-related changes in the vitreous gel inside the eye.
• Sudden onset of many new floaters in an older adult may signal a retinal detachment.

Causes

Main causes

• Age-related changes: The vitreous gel inside the eye shrinks and pulls away from the retina, causing clumps to form.
• Posterior vitreous detachment (PVD): A common, usually harmless condition where the vitreous separates from the retina.
• Inflammation inside the eye (uveitis) from infection or other conditions.
• Bleeding into the eye (vitreous hemorrhage) from diabetes, high blood pressure, or injury.
• Retinal tear or retinal detachment – a serious condition where the retina pulls away from its normal position.

Risk factors

• Being over 50 years old
• Being nearsighted (myopic)
• Having diabetes or high blood pressure
• Previous eye surgery or eye injury
• Inflammation inside the eye

When to see a doctor

See a doctor urgently if:

• If you suddenly see a lot of new floaters that seem to come all at once
• If you see flashes of light, especially in one eye
• If you notice a loss of side vision or a dark curtain over part of your vision
• If you have any sudden change in vision after an eye injury

Book a routine appointment if:

• If you have floaters that are not changing but are still bothersome after a few weeks, see an optometrist or GP for a routine eye check.

Diagnosis

A doctor or optometrist will examine your eyes to check for underlying problems. They will ask about your symptoms and medical history.

Tests that may be done

• Dilated eye exam: Eye drops are used to widen your pupils so the doctor can see the inside of your eye clearly.
• Slit-lamp examination: A special microscope with a bright light lets the doctor examine your retina and vitreous.
• Eye pressure check and visual field test to rule out other conditions.

What to expect at your appointment

The examination is painless and takes about 30–60 minutes. Your vision may be blurry for a few hours after the drops, so bring sunglasses and avoid driving.

Treatment

Most floaters do not need treatment. If they are caused by a serious condition like a retinal tear or detachment, prompt treatment is needed to prevent vision loss.

Self-care at home

• Try to ignore floaters – they often become less noticeable over time.
• Look up and down or side to side to move floaters out of your line of sight.
• Avoid rubbing your eyes.
• If floaters are very bothersome, talk to your doctor about ways to manage them.

Medical treatments

In rare cases where floaters severely interfere with vision, a procedure called vitrectomy may be considered. This involves removing the vitreous gel and replacing it with a clear fluid. A laser treatment called vitreolysis can also break up some floaters. These procedures carry risks and are not routinely recommended unless floaters are extremely disruptive.

When is surgery considered?

Surgery is generally only considered if floaters are caused by a retinal detachment or tear that needs repair, or if severe floaters significantly impair daily life.

Living with this condition

Most people with harmless floaters can live normally. You may notice floaters more in bright light or when looking at a blank wall. Over time, your brain usually learns to ignore them.

Lifestyle tips

• Stay aware of any sudden changes in your vision and seek help immediately if new symptoms appear.
• Protect your eyes from injury by wearing safety glasses during sports or DIY.

Diet and exercise

A healthy diet rich in antioxidants (like leafy greens and colourful vegetables) and regular exercise may support overall eye health, but there is no specific diet proven to prevent or treat floaters.

Mental health and emotional wellbeing

Floaters can be annoying or worrying at first, especially if you don't know what they are. They rarely cause anxiety once you understand they are usually harmless. If you feel anxious, talk to your doctor for reassurance.

Prevention

Age-related floaters cannot be prevented. However, protecting your eyes from injury and managing conditions like diabetes and high blood pressure may reduce the risk of floaters from bleeding or inflammation.

Screening programmes

Regular eye exams every 1-2 years (as recommended for your age and risk) can help detect eye problems early, but there is no specific screening for floaters.

Complications

If left untreated

• If floaters are a sign of a retinal tear or detachment, vision loss can be permanent without prompt treatment.
• Untreated eye infections or inflammation causing floaters may lead to scarring or vision problems.

Long-term outlook

For the vast majority of people, floaters are harmless and become less bothersome over time. Even if they don't disappear completely, your brain usually learns to ignore them. With regular eye checks and prompt attention to sudden changes, most people keep good vision.

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