This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables. The anatomy of the vitreous and the lens is studied better in the gross than under the microscope because of the unavoidable artefacts produced in the preparation of the specimens for cutting sections. All apparent discrepancies between the gross and the microscopic specimens must be reexamined until doubt is removed. GROSS ANATOMY After the lens-vitreous body is isolated in the fresh eye by removing the overlying structures in saline solution without pressure, it is suspended by a contact lens bulb applied to the anterior capsule. The retina and the vitreous hang by the zonular membrane from the lens. When the retina is finally removed, the vitreous still hangs from the lens by means of the zonular membrane's insertion into the hyaloid membrane at the site of the ora serrata. This line of insertion may be called the hyaloretinal line (or ligament, since it represents the point of end action of