
Floaters
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Flashes and Floaters in Your Vision
Why do they happen?
Many people notice flashes of light or floaters in their vision, even with healthy eyes.
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Floaters may look like tiny spots, tadpoles, or cobwebs that move when your eyes move.
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These occur because of natural changes in the gel inside the eye, called the vitreous.
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Sometimes the vitreous separates from the retina (the light-sensitive layer at the back of the eye). This is called a posterior vitreous detachment (PVD) and is a common cause of flashes and floaters.
Are they dangerous?
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In most cases, flashes and floaters are not harmful and do not need treatment.
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Flashes usually fade over a few days.
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Floaters often stay the same or become less noticeable over time.
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When you were examined today, no damage was found in your eye, so no treatment is needed.
However, it is important to have your eyes checked if you notice any new flashes or floaters.
When to seek urgent help
Although uncommon, serious problems can sometimes develop later. Contact an optician immediately if you notice:
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Flashes or floaters suddenly getting worse
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A dark “curtain” coming across your vision
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Sudden loss of vision
If your optician is closed, call NHS 24 on 111.
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