Eye floaters: harmless or a warning sign?

You look up at a bright sky or a white wall and see tiny specks, threads, or cobweb shapes drifting across your view. You try to look straight at them and they dart away. These are floaters, and almost everyone gets them. Most of the time they are nothing to worry about. Sometimes they are your eye asking for urgent help. Knowing the difference matters.

What floaters actually are

Most of your eye is filled with a clear jelly called the vitreous. As you age, this jelly slowly becomes more watery and small fibres clump together inside it. Those clumps cast shadows on the retina at the back of your eye, and those shadows are what you see drifting around. Because they float in the jelly, they move when your eye moves, which is why they slip away when you try to focus on them.

The usual, harmless kind

A few floaters that have been there for a while, that you mostly notice against bright backgrounds, and that are not getting worse, are typically harmless. They are more common as you get older and in people who are nearsighted. Often the brain learns to ignore them over time, and they become less bothersome even if they never fully disappear.

The warning signs that need urgent care

See an eye doctor as soon as possible if you notice any of these, especially together:

• A sudden shower of new floaters, many more than your usual few, appearing all at once.
• Flashes of light, like quick sparks or lightning at the edge of your vision.
• A dark shadow or curtain creeping in from the side or across your vision.
• A sudden drop in vision in one eye.

These can be signs that the vitreous is pulling on the retina, or that the retina is tearing or detaching. A retinal detachment is an emergency. Treated early, vision is often saved. Left too long, it can lead to permanent loss. This is not a wait-and-see situation.

Why you should not self-diagnose

From the outside, harmless floaters and dangerous ones can feel similar at first. The only way to know what is happening at the back of your eye is for someone to look inside it. An eye doctor can examine your retina, usually after widening your pupil with drops, and tell you clearly whether it is the ordinary kind or something that needs treatment.

What you can do

If your floaters are long-standing and stable, mention them at your next eye test so they are on record. If anything changes suddenly, do not wait for your scheduled appointment. Get seen quickly. It is always better to have a false alarm checked than to miss the real thing.

Noticing new floaters, flashes, or a shadow in your vision? Do not wait. Book an eye test at Vision Express, and if your symptoms are sudden or severe, seek eye care urgently the same day.