Baseline comparison of deep anterior lamellar keratoplasty with penetrating keratoplasty
| Variable | DALK group (n=228) | PK group (n=274) | P value |
| Recipient rejection status | |||
| Low-risk | 226 (99.1%) | 271 (98.9%) | |
| High-risk | 2 (0.9%) | 3 (1.1%) | 0.81 |
| Preoperative intraocular pressure | |||
| <20 mm Hg and no history of glaucoma | 220 (96.5%) | 273 (99.6%) | |
| >20 mm Hg and/or history of glaucoma | 8 (3.5%) | 1 (0.4%) | 0.008 |
| Donor trephination size (mm) | 8.24 (0.09) (7.50; 8.50) | 8.19 (0.19) (7.25; 8.50) | 0.24 |
| Recipient trephination size (mm) | 8.11 (0.14) (7.50; 8.50) | 7.99 (0.12) (7.00; 8.25) | <0.00001 |
| Recipient age (years) | 34.2 (11.4) (13; 77) | 32.6 (13.2) (10; 77) | 0.16 |
| Donor age (years) | 70.4 (13.1) (27; 96) | 69.9 (13.9) (34; 97) | 0.70 |
| Follow-up (months) | 103.4 (58.1) (1; 224) (median, 102) | 106.1 (94.5) (1; 332) (median, 70) | 0.70 |
| Number of eyes examined | |||
| Preoperatively | 228 (100.0%) | 274 (100.0%) | |
| At 1 year | 220 (96.5%) | 256 (93.4%) | |
| At 3 years | 192 (84.2%) | 199 (72.6%) | |
| At 5 years | 171 (75.0%) | 149 (54.4%) | |
| At 10 years | 88 (38.6%) | 94 (34.3%) | |
| At 15 years | 45 (19.7%) | 81 (29.6%) |
Numbers (percentages), mean (SD) and range are shown.
DALK, deep anterior lamellar keratoplasty; PK, penetrating keratoplasty.