Floaters and flashes in the eyes

Dots and lines (floaters) or flashes of light in your vision are common. They're not usually serious.

Symptoms of floaters and flashes

Floaters in your vision can look like:

• small dark dots
• squiggly lines
• rings
• cobwebs

Flashes look like sudden flashes of light.

They're usually harmless and not a sign of anything serious, especially if:

• you've had them for a long time
• they're not getting worse
• your vision is not affected

Flashes may eventually stop, and floaters often become less noticeable as you get used to them.

What happens at your appointment

If you have problems with floaters or flashes in your vision your eyes will be checked at an opticians to see if you need to be seen by an eye doctor (ophthalmologist) for more tests or treatment.

You'll usually only need treatment if you have a problem that could affect your vision.

Causes of floaters and flashes

Lots of people, particularly older people, get floaters and flashes.

They're usually caused by a harmless process called posterior vitreous detachment (PVD), where the gel inside your eyes changes.

Sometimes they can be caused by retinal detachment.

This is serious and can lead to permanent vision loss if not treated.

Floaters and flashes can also happen for no obvious reason.