The periorbita is the area around the
orbit
In celestial mechanics, an orbit (also known as orbital revolution) is the curved trajectory of an object such as the trajectory of a planet around a star, or of a natural satellite around a planet, or of an artificial satellite around an ...
. Sometimes it refers specifically to the layer of tissue surrounding the orbit that consists of
periosteum.
However, it may refer to anything that is around the orbit, such as in
periorbital cellulitis.
References
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Tissues (biology)
Human eye anatomy