Fig. 20. Transmission electron micrograph shows folded collagen (arrow) consistent with posterior hyaloid (morphologically type II collagen). Adherent to the denser posterior surface is a cellular pseudopod (double arrow). The cell body is not present in this grid. (Margherio RR, Trese MT, Margherio AR et al: Surgical management of vitreomacular syndromes. Ophthalmology 1989;96:1442)