Figure 1 of Meyer-ter-Vehn, Mol Vis 2008; 14:136-141.

Figure 1. Increased cell density in scarred filtering blebs. Normal conjunctiva (A) shows loose subepithelial connective tissue with sparse fibroblasts and occasional vascular structures (arrows). In contrast, scarred filtering blebs (B) are characterized by compacted connective tissue with abundant spindle-shaped cells and various vascular structures. H&E stains.