You may notice them while looking at a pale wall, a computer screen or the bright sky: tiny dots, wisps, rings or cobweb-like shapes that drift across your vision. Are eye floaters always serious? Usually, no. Many are a normal part of getting older. However, a sudden new shower of floaters, particularly with flashes of light or a shadow in your vision, needs prompt attention.
The reassuring part is that an eye examination can help distinguish a common age-related change from a problem that needs urgent treatment. If you are unsure, it is always better to have a new or changing symptom assessed rather than wait and worry.
What are eye floaters?
Floaters are small shadows cast on the retina, the light-sensitive layer at the back of the eye. They are usually caused by tiny clumps or strands within the vitreous, the clear gel that fills the inside of the eye.
They move as your eyes move, often seeming to dart away when you try to look directly at them. They can be especially noticeable in bright conditions because a light, plain background makes the shadows easier to see.
For many people, floaters are occasional and unobtrusive. Others find they are more noticeable for a while, then gradually become less bothersome as the brain learns to filter them out or as they settle below the central line of sight.
Are eye floaters always serious, or are they normal?
Most floaters are not a sign of serious eye disease. They become more common from middle age onwards as the vitreous naturally changes texture and becomes more liquid. This can create the familiar specks and threads that come and go in vision.
A common cause is a posterior vitreous detachment, often shortened to PVD. Despite the unsettling name, this is frequently a normal age-related process. The vitreous gel shrinks and separates from the retina. It may cause a sudden increase in floaters and, sometimes, flashes, but it does not always damage the eye.
The key word is always. Floaters are not always serious, but they can occasionally signal that the vitreous has pulled on the retina strongly enough to cause a tear. In some cases, fluid can then pass through the tear and lift the retina away from the back of the eye. This is called a retinal detachment and requires urgent care to protect sight.
The difference cannot reliably be judged at home. A thorough examination, often including dilating drops to allow a clear view of the retina, is the safest way to check what is happening.
When should you seek urgent advice?
Contact an optometrist urgently, or seek urgent medical eye care, if floaters are new, sudden or noticeably increasing. Do not wait for your next routine sight test if you experience any of the following:
- a sudden shower of new dots, spots or cobwebs
- flashing lights, particularly at the edge of your vision
- a dark curtain, veil or shadow spreading across your sight
- a patch of missing or blurred side vision
- floaters after an injury to the eye or head
- a sudden change in vision alongside eye pain or marked redness
A curtain or shadow in your vision, a significant loss of sight, or sudden symptoms after an injury should be treated as an emergency. Seek same-day advice from an urgent eye-care service, NHS 111 or an eye casualty department, depending on what is available locally.
Flashes and floaters do not automatically mean you have a retinal tear or detachment. Many people with a PVD have neither. But because the potential consequences can be serious, a prompt retinal check is sensible. Early treatment of a retinal tear can greatly reduce the risk of a detachment developing.
Who is more likely to develop concerning floaters?
Age is the most common factor, but some people have a higher likelihood of retinal problems. This includes people who are very short-sighted, have had previous eye surgery such as cataract surgery, have suffered an eye injury, or have a family history of retinal detachment.
People with diabetes should also keep regular eye appointments, although diabetic eye changes do not usually present simply as ordinary floaters. Bleeding inside the eye can sometimes create a sudden haze of dots or dark shapes, and needs assessment without delay.
If you have had a retinal tear or detachment in one eye, take any new flashes or floaters in the other eye particularly seriously. Your optometrist can advise on the right review schedule for your circumstances.
What happens at an appointment for flashes and floaters?
The first step is listening carefully to what you have noticed: when it started, whether it is in one eye or both, whether you have seen flashes, and whether there has been any loss of vision. These details help us decide how urgently you need to be seen.
At an eye examination, your vision and eye pressure may be checked, followed by a close inspection of the back of your eyes. Dilating drops are often used to widen the pupils and give a much better view of the retina around the edges, where tears can occur.
The drops can make close vision blurry and increase light sensitivity for a few hours. It is wise to bring sunglasses and arrange not to drive yourself home unless you have been told it is safe to do so. This short-term inconvenience is worthwhile for a proper retinal assessment.
If the examination shows a straightforward PVD with no retinal damage, you may be advised to monitor your symptoms and return promptly if they worsen. If there is a tear or another concern, you may be referred urgently to an ophthalmology team for treatment or further investigation.
Can you get rid of eye floaters?
In most cases, treatment is not needed. Floaters often become less intrusive over time, even if they do not disappear completely. Looking away from very bright, plain backgrounds can make them less apparent, but there is no proven eye drop, vitamin or supplement that dissolves ordinary floaters.
Procedures are available in selected cases where floaters are severely affecting daily life, but they are not routine and carry their own risks. Laser treatment is not appropriate for every type of floater, and vitrectomy surgery can be effective but involves important risks, including cataract development, retinal tears and infection. These options should be discussed carefully with a specialist when symptoms are genuinely debilitating.
Be wary of products that promise to clear floaters quickly. The most valuable step is an accurate diagnosis, particularly when symptoms are new.
Do not put off a sight test because you think it is “just floaters”
Routine eye examinations are about more than checking whether you need a new prescription. They allow your optometrist to monitor the health of the eyes and identify changes that may not yet be causing obvious symptoms.
At Mark Darling Eyecare & Opticians, we take time to see each patient as an individual. If something in your vision has changed, explaining exactly what you are seeing helps us give you the right advice and arrange the appropriate level of care.
Floaters that have been stable for years are often harmless, but your eyes do not come with a warning light. If a new speck, flash or shadow has caught your attention, trust that instinct and arrange an assessment. A little reassurance can be valuable, and prompt action matters when the retina needs protecting.