Main Model
VASCULAR LAYER OF EYEBALL : 8 Vorticose vein
Venous drainage of the orbit is through the superior and inferior ophthalmic veins, which pass through the superior orbital fissure and enter the cavernous sinus.
The central vein of the retina usually enters the cavernous sinus directly, but it may join one of the ophthalmic veins. The vortex, or vorticose veins, from the vascular layer of the eyeball drain into the inferior ophthalmic vein. The scleral venous sinus is a vascular structure encircling the anterior chamber of the eyeball through which the aqueous humor is returned to the blood circulation.
SUMMARY
The vorticose vein (one of four to five) drains venous blood from the choroid into the posterior ciliary and ophthalmic veins. The scleral venous sinus returns the aqueous humor, secreted into the anterior chamber by the ciliary processes, to the venous circulation.