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What causes floaters and when are they serious?

< 1 min read

Floaters usually come from tiny clumps in the vitreous gel inside the eye casting shadows on the retina. They are often harmless but can sometimes signal more serious problems.

Common, benign floaters

With age, the vitreous becomes more watery and shrinks slightly. This change creates strands and spots that move as your eyes move.

  • Specks, cobwebs, or squiggly lines drifting across vision
  • Most obvious against bright, plain backgrounds like a clear sky
  • Often settle or become less noticeable over time
  • Usually do not affect sharpness of sight

Warning signs that need urgent review

Sudden changes in floaters can indicate retinal tears or detachment. Quick assessment protects sight.

  • New shower of floaters appearing within minutes or hours
  • Flashes of light, especially in the side vision
  • Dark curtain, shadow, or missing area of vision
  • Seek same-day emergency eye care if these symptoms appear