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
The periosteum is a membrane that covers the outer surface of all bones, except at the articular surfaces (i.e. the parts within a joint space) of long bones. (At the joints of long bones the bone's outer surface is lined with "articular cartila ...
.
However, it may refer to anything that is around the orbit, such as in
periorbital cellulitis.
References
{{Authority control
Tissues (biology)
Human eye anatomy