What are the shadows like “floaters” in the eyes: scientists explain

Many of us have wondered what are these these “floaters” that we usually see when we look at a bright surface…
Scientists explain how they are shadows of tiny particles that are within of the eye, such as red blood cells, masses of proteins or small tissue sections,which are called “muscae volitantes”, meaning “flying flies” in Latin.
We have the perception that the spots move when shifting our gaze because the particles are located in the vitreous, the fluid that fills the inside of the eye.
The closer is the particle to the retina, the more strongly perceived.
This is a… “mirage”, as it informs us of the video for the YouTube channel, TED-Ed.

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