Fig. 24 Vitreous relations in the anterior eye. The ora serrata (1) is the termination of the retina. The vitreous base (2) extends forward about 2 mm over the ciliary body and posteriorly approximately 4 mm over the peripheral retina. The collagen in this region is oriented at a right angle to the surface of the retina and ciliary body, but anteriorly over the pars plana it is more parallel to the inner surface of the ciliary body. The posterior hyaloid (4) is continuous with the retina, and the anterior hyaloid (3) with the zonules and lens. The ligamentum pectinatum is at 5, and the space of Berger is at 6. (Hogan M, Alvarado J, Weddell J: Histology of the Human Eye—An Atlas and Textbook. Philadelphia, WB Saunders, 1971:612)