Floaters look like specks, threads or cobwebs drifting across your vision, most noticeable against a bright sky or white wall. Most of the time they are harmless. Occasionally, though, they are the warning sign of a retinal tear or detachment, which needs urgent treatment.
Why floaters happen
The inside of the eye is filled with a clear gel called the vitreous. With age, it becomes more liquid and can pull away from the retina at the back of the eye. Clumps in the gel cast shadows on the retina, which you see as floaters. This is called posterior vitreous detachment and is very common after 50.
Flashes of light
Flashes, like lightning streaks at the edge of vision, happen when the gel tugs on the retina. Occasional flashes can occur with normal gel changes, but they deserve a check, especially when new.
Warning signs: see an eye doctor the same day
- A sudden shower of new floaters
- New or frequent flashes of light
- A dark shadow or curtain spreading across part of your vision
- Sudden blurring of vision
These can mean the retina has torn. A tear can be sealed with laser in the clinic. If it progresses to a retinal detachment, surgery is needed, and the sooner it is done the better the chance of saving vision.
Who is at higher risk
- People over 50
- Short-sighted people, especially with high power
- Those who have had cataract surgery or an eye injury
- A previous retinal tear or detachment in either eye
- Family history of retinal detachment
What happens at the exam
Your doctor will dilate your pupils and examine the entire retina, including its edges. If everything is healthy, you will be told what changes to watch for. Long-standing floaters often become less noticeable over time as the brain learns to ignore them.
Learn about our retina care, or contact your nearest clinic if you notice warning signs.
Frequently asked questions
Can floaters be removed?
Most floaters do not need treatment. Rarely, when they seriously affect vision, surgery may be considered after a careful discussion of risks.
Do eye drops help floaters?
No eye drops are proven to remove floaters.
Sources
This article is for general information and does not replace an examination by an eye doctor. If you have symptoms, please book a consultation.