High-risk corneal allografts: A therapeutic challenge

Figure 4 Clinical images of a “high-risk” cornea from a patient with ocular surface disease transplanted with a recombinant human collagen-based hydrogel. A: Corneal graft bed showing fluorescein stained epithelial erosion/ulcer (green/yellow staining) and vascularization before transplantation; B: Relatively clear cornea with clinically visible regression of peripheral corneal vessels 12 mo post-surgery[215].