Fig. 18. Descemet's membrane is a composite of a nonbanded posterior portion with a granular appearance (DM) and an anterior portion with a banded appearance (arrows). At the interface between the stromal collagen (above) and Descemet's membrane is a narrow, unbanded, granular-appearing region. The endothelium (E) is seen below (37,000×). (Courtesy of Drs. Rodrigues, Waring, Hackett, and Donohoo.)