Fig. 13. Posterior vitreous in the left eye of a 59-year-old man. The vitreous cortex (white arrows) envelopes the corpus vitreous and contains multiple, small, highly refractile points that scatter light intensely, which are cells known as hyalocytes. There is a “hole” (black arrows) in the prepapillary posterior vitreous cortex through which vitreous extrudes into the retrocortical space. Larger amounts of vitreous extrude through the premacular vitreous cortex, and fibers course from the central vitreous into the retrocortical space. (Sebag J, Balazs EA: Human vitreous fibres and vitreoretinal disease. Trans Ophthalmol Soc UK 104:123, 1985)