Fig. 12. Ultrastructure of posterior vitreous cortex in humans. Scanning electron microscopy demonstrates the dense packing of collagen fibrils in the vitreous cortex. To some extent this arrangement is exaggerated by the dehydration that occurs during specimen preparation for scanning electron microscopy (bar = 10 [a 5]mm). (Sebag J: The Vitreous--Structure, Function and Pathobiology. New York, Springer-Verlag, 1989)