Table (1).
Demographic and Clinical Features of Patients With Keratoconus Who Underwent Penetrating Keratoplasty (PKP)
| Variables | Clear Graft | Failed Graft | Total N | P |
|---|---|---|---|---|
| Gender, n (%) | ||||
| Male | 194 (97.5) | 5.0 (2.5) | 199 | 0.319 |
| Female | 111 (99.1) | 1.0 (0.9) | 112 | 0.137 |
| Eye,n (%) | ||||
| Right | 144 (99.3) | 1.0 (0.7) | 145 | |
| Left | 161 (97.0) | 5.0 (3.0) | 166 | |
| Age, y | ||||
| Mean | 23.67 | 26.3 | ||
| Age at surgery, y,n(%) | ||||
| ≤15 | 21 (95.45) | 1 (4.55) | 22 | 0.223 |
| 16–19 | 34 (94.44) | 2 (5.60) | 36 | |
| 20–24 | 137 (99.3) | 1 (0.72) | 138 | |
| ≥25 | 113 (98.3) | 2 (1.7) | 115 | |
| Follow-up, months | ||||
| Mean | 41 | 23.62 | >0.05 | |
| Range | 2.1–65.7 | 2.6–44.73 | ||
| Recipient bed diameter, mm | ||||
| Mean | 7.44 | 7.58 | ||
| Range | 6.0–8.25 | 7.5–8.00 | ||
| Donor graft diameter, mm | ||||
| Mean | 7.68 | 7.87 | ||
| Range | 6.0–8.50 | 7.75–8.25 | ||
| Lens status,n(%) | ||||
| Pseudophakia | 5.0 (83.3) | 1.0 (16.7) | 6 | 0.008 |
| Phakia | 300 (98.4) | 5.0 (1.6) | 305 | |
| Recipient size,n(%) | ||||
| ≤7.5 mm | 248 (98.0) | 5.0 (2.0) | 253 | >0.05 |
| >7.5 mm | 57 (98.3) | 1.0 (1.7) | 58 | |
| Previous surgery,n(%) | 5.0 (100) | 0.0 (0.00) | 5 | 0.652 |
| Additional surgery,n(%) | ||||
| Cataract surgery | 0.0 (0.00) | 1.0 (100) | 1 | 0.00 |
| Others | 2.0 (100) | 0.0 (0.00) | 2 | |
| Previous glaucoma,n(%) | 2.0 (100) | 0.0 (0.00) | 2 | 0.842 |
| Glaucoma escalation,n(%) | 7.0 (100) | 0.0 (0.00) | 7 | 0.707 |
| Rejection,n(%) | 19 (90.5) | 2.0 (9.5) | 21 | 0.009 |