Table 1. Worksheet for calculating a patient's total risk score[2].
| Factors present before graft | Points | Patient's score | |
| Original condition | |||
| Keratoconus | 0 | ||
| Bullous keratopathy | 1 | ||
| Corneal dystrophy | 0 | ||
| HSV | 1 | ||
| Non HSV scar | 1 | ||
| Non HSV ulcer | 4 | ||
| Trauma | 2 | ||
| Non HSV infection | 5 | ||
| Quadrants of vascularization | |||
| 0 | 1 | ||
| 1 | 2 | ||
| 2 | 2 | ||
| 3 | 3 | ||
| 4 | 4 | ||
| Lens status | |||
| Aphakic, no intention to implant IOL | 3 | ||
| Phakic pre and post | 1 | ||
| Intend to place/replace IOL at graft | 1 | ||
| No IOL change | 2 | ||
| Number of previous corneal grafts | |||
| 0 | 1 | ||
| 1 | 3 | ||
| 2 | 4 | ||
| 3 | 5 | ||
| 4 or more | 6 | ||
| Glaucoma before planned procedure | |||
| No history of raised IOP | 1 | ||
| History of raised IOP, controlled | 3 | ||
| Persistent raised IOP | 3 | ||
| Uveitis | |||
| None, ever | 0 | ||
| Previous, ever | 1 | ||
| Currently inflamed | 3 | ||
| Previous and currently inflamed | 3 | ||
| Blood transfusion | |||
| None | 1 | ||
| Previous transfusion | 2 | ||
| Total score |
|||
| Date of surgery | Date of latest follow up | ||
| Graft failure? | Date of failure if occurred | ||
HSV: Herpes simplex virus; IOP: Intraocular pressure.