Table 3.
Combined surgery and graft size of keratoplasty.
| Characteristic | Total N = 730 |
Surgical procedure of keratoplasty | p-value1 | |||
|---|---|---|---|---|---|---|
| [A] PK N = 198 |
[B] DSAEK N = 277 |
[C] nDSAEK N = 138 |
[D] DMEK N = 117 |
|||
| Simple vs. Combined KP, n (%) | ||||||
| [1] Simple keratoplasty | 603 (82.6%) | 160 (80.8%) | 230 (83.0%) | 113 (81.9%) | 100 (85.5%) | 0.878 |
| [2] Combined keratoplasty | 127 (17.4%) | 38 (19.2%) | 47 (17.0%) | 25 (18.1%) | 17 (14.5%) | |
| Combined surgery breakdown, n | ||||||
| [1] Cataract surgery | 102 | 27 | 35 | 23 | 17 | |
| [2] IOL fixaction | 20 | 8 | 10 | 2 | 0 | |
| [3] Anterior vitrectomy | 2 | 2 | 0 | 0 | 0 | |
| [4] Pupiloplasty | 2 | 0 | 2 | 0 | 0 | |
| [5] KLAL | 1 | 1 | 0 | 0 | 0 | |
| Graft size [mm] | ||||||
| Mean (SD) | 7.77 (0.44) | 7.63 (0.42) | 7.79 (0.50) | 7.80 (0.43) | 7.95 (0.25) | < 0.001 |
| Median [Range] | 8.00 [5.50, 8.75] | 7.75 [5.50, 8.75] | 8.00 [6.00, 8.50] | 8.00 [6.00, 8.50] | 8.00 [7.25, 8.50] | |
| Graft size group, n (%) | ||||||
| [1] 4.0–< 7.6 mm | 195 (26.7%) | 66 (33.3%) | 79 (28.5%) | 36 (26.1%) | 14 (12.0%) | |
| [2] 7.6–< 7.8 mm | 128 (17.5%) | 105 (53.0%) | 4 (1.4%) | 5 (3.6%) | 14 (12.0%) | |
| [3] 7.8–< 8.1 mm | 316 (43.3%) | 18 (9.1%) | 155 (56.0%) | 80 (58.0%) | 63 (53.8%) | |
| [4] 8.1–9.0 mm | 57 (7.8%) | 5 (2.5%) | 27 (9.7%) | 6 (4.3%) | 19 (16.2%) | |
| [5] Unknown | 34 (4.7%) | 4 (2.0%) | 12 (4.3%) | 11 (8.0%) | 7 (6.0%) | |
DMEK descemet membrane endothelial keratoplasty, (n)DSAEK (non-)descemet’s stripping automated endothelial keratoplasty, KLAL keratolimbal allograft, PK penetrating keratoplasty, SD standard deviation.
Significant values are given in bold.
1Chi-square test for ‘Simple vs. Combined KP’; Kruskal–Wallis test for ‘Graft size’.
*For cases with multiple concomitant techniques, the most representative technique was selected.
♰ECCE extracapsular cataract extraction, ICCE intracapsular cataract extraction, IOL intraocular lens.