Assessment of the stroma and endothelium in specimens from the failed-PK-KCN, primary KCN and failed-PK-non-KCN groups
| Stroma | Endothelium | ||||
| Oedema | Scarring | Neovascularisation | Intact | Attenuated/absent | |
| Failed-PK-KCN (n=21) | 19 | 19 | 6 | 4 | 17 |
| Primary KCN (n=11) | 9 | 9 | 1 | 4 | 7 |
| Failed-PK-non-KCN (n=11) | 9 | 7 | 1 | 10 | |
KCN, keratoconus; PK, penetrating keratoplasty.