The largest structure in the eye is the vitreous. This is a jellylike substance which fills most of the eye. It is 99% water and 1% protein. Sometimes when light hits the protein fibers it bends slightly creating a moving shadow in our field of vision called a floater.

At some point in life, this sack of jelly may collapse on itself (posterior vitreous detachment). As it pulls away from the back of the eye it may pull some tissue with it creating a larger type of floater (posterior vitreous detachment floater or PVD). In most cases this is uneventful but sometimes it tears the retina which can become quite serious.

Any change in floaters especially, if accompanied with flashing lights, should always be reported to your eye doctor.

 

Flater Video

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Playlist: Courtesy of American Academy of Ophthalmology

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