Figure 6: Histological examination of the cornea at 28 days after surgery. (A, B) In the control group, HCECs and Descemet’s membrane are absent. Severe stromal edema and diffuse cell infiltration are observed. (C, D) HE staining shows a collagen sheet with HCECs on the posterior surface of the cornea and no stromal edema in the DSAEK group. Fibroblast-like cells are detected in the posterior corneal stroma attached to the collagen sheet. Bar=100 μm.