Figure 1. Immunophenotypes of MCD. Light microscopic images of representative corneas show different immunophenotypes of MCD (stained with diaminobenzidine [DAB], counterstained with hematoxylin-eosin). A: A cornea with the absence of detectable AgKS is shown (MCD type I; DAB; 40X). B: A cornea is shown with reactivity to AgKS only in stromal keratocytes (MCD type IA; DAB; 100X). C: A cornea is shown with AgKS detected throughout the stroma (MCD type II; DAB; 100X). Arrowheads point to the deposits in stromal keratocytes.