Fig. 8. Vitreous morphology in human embryo. The posterior aspect of the lens is seen below. The corpus vitreous is enclosed by the dense, highly light-scattering vitreous cortex. Within the corpus vitreous, Cloquet's canal arcs from the prepapillary vitreous cortex toward the lens. Because its course undulates through the central vitreous, not all of Cloquet's canal can be visualized in a single horizontal section. (Sebag J: Age-related changes in human vitreous structure. Graefes Arch Clin Exp Ophthalmol 225:89, 1987)