Vascular circle of optic nerve
Circulus vasculosus nervus optici
Definition
The vascular circle of optic nerve is a small vascular ring that surrounds the optic nerve, running through the sclera near the area cribrosa sclerae.
References
Barone R, Simoens P. Anatomie comparée des mammifères domestiques, Tome 7, Neurologie II, Vigot, Paris, 2010.