The ciliary vein is a small vessel in the eye that drains blood away from the ciliary body and anterior uvea. Synonyms for this structure include ciliary vortex vein, longitudinal ciliary vein, and sinus of the ciliary body. These veins play a crucial role in maintaining proper eye function by regulating intraocular pressure and providing important nutrients to the surrounding tissues. Additionally, when the ciliary veins become blocked or damaged, this can lead to serious eye conditions such as glaucoma. Therefore, proper care of the ciliary veins is essential for maintaining healthy eyes and good vision.