What it is?

Miodesopsie, known as “eyes floaters”, appear as small black spots that we can see moving through our visual field, especially when looking at a light background, like white paper or a blue sky.


Eye floaters at a light background like blue sky


They come in many different shapes:

  • Black or gray dots
  • Squiggly lines
  • Threadlike strands, which can be knobby and almost see-through
  • Cobwebs
  • Rings


What causes them?

They are caused by factors such as the aging of the vitreous humor (gel-like substance in the back of the eye). 

As you age, the protein fibers that make up the vitreous shrink down to little shreds that clump together. The shadows they cast on your retina are floaters. If you see a flash, it’s because the vitreous has pulled away from the retina. If that happens, see your eye doctor.

These changes can happen at any age, but usually occur between 50 and 75. You’re more likely to have them if you’re nearsighted or have had cataract surgery.



Most eye floaters and spots are safe and simply annoying. Lots of will fade in time. Most of the times, no eye floaters treatment is required.

However, big persistent floaters can be extremely irritating to some people, triggering them to look for a method to get rid of eye floaters and spots wandering in their field of view.

Recently, a laser procedure called laser vitreolysis has actually been introduced that is an alternative to vitrectomy for eye floater treatment.



Contact an eye specialist immediately if you notice:

  • Many more eye floaters than usual
  • A sudden onset of new floaters
  • Flashes of light in the same eye as the floaters
  • Darkness on any side or sides of your vision (peripheral vision loss)

These painless symptoms could be caused by a retinal tear, with or without a retinal detachment — a sight-threatening condition that requires immediate attention.

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