Introduction

Floaters are small shapes that some people see floating in their field of vision.

They can be different shapes and sizes and may look like:

• tiny black dots
• small, shadowy dots
• larger cloud-like spots
• long, narrow strands

You may have many small floaters in your field of vision or just one or two larger ones. Most floaters are small and quickly move out of your field of vision.

Floaters are often most noticeable when you're looking at a light-coloured background, such as a white wall or clear sky.

Do floaters affect vision?

Floaters sometimes occur without a person noticing them. This is because the brain constantly adapts to changes in vision and learns to ignore floaters so they don't affect vision.

Floaters are usually harmless and don't significantly affect your vision. However, it's important you have your eyes checked by an optician regularly (at least once every two years).

Larger floaters can be distracting and may make activities involving high levels of concentration, such as reading or driving, difficult.

Find an optician near you .

What causes floaters?

Floaters are small pieces of debris that float in the eye's vitreous humour. Vitreous humour is a clear, jelly-like substance that fills the space in the middle of the eyeball.

The debris casts shadows on to the retina (the light-sensitive tissue lining the back of the eye). If you have floaters, it's these shadows you'll see.

Floaters can occur as your eyes change with age. In most cases, they don't cause significant problems and don't require treatment.

In rare cases, floaters may be a sign of a retinal tear or Retinal detachment (where the retina starts to pull away from the blood vessels that supply it with oxygen and nutrients).

Eye drops or similar typesof medication won't make floaters disappear.

After a while, your brain learns to ignore floaters and you may not notice them.

If your floaters don't improve over time, or if they significantly affect your vision, a vitrectomy may be recommended. Thisis asurgical operation to remove the vitreous humour in your eye along with any floating debris and replace it with a saline (salty) solution.

If your retina has become detached,surgery is the only way tore-attach it. Without surgery, a total loss of vision is almost certain. In 90% of cases, only one operation is needed to re-attach the retina.

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