Table 2.
Comparison of corneal endothelial cell parameters among different corneal regions at the preoperative and 1 month postoperative time points.
| Corneal regions | Parameters | CD (cells/mm2) | AVG (μm2) | CV (%) | 6A (%) |
|---|---|---|---|---|---|
| Central | Pre-op | 2419.8 ± 247.0 | 398.5 ± 29.1 | 40.4 ± 4.4 | 48.0 ± 6.4 |
| 1mo Post-op | 2188.6 ± 166.2 | 629.9 ± 46.0 | 48.9 ± 4.4 | 44.0 ± 5.5 | |
| Δ | 231.2 ± 181.4 | 231.4 ± 50.6 | 8.5 ± 2.7 | 4.0 ± 2.7 | |
| t-test | 6.979 | −25.059 | −17.422 | 8.172 | |
| p value | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
| Superior | Pre-op | 2444.6 ± 214.8 | 384.4 ± 38.0 | 42.3 ± 4.0 | 49.5 ± 5.8 |
| 1mo Post-op | 2224.3 ± 195.5 | 649.0 ± 55.9 | 51.5 ± 4.9 | 46.2 ± 6.5 | |
| Δ | 220.4 ± 19.3 | 264.6 ± 39.9 | 9.2 ± 1.0 | 3.3 ± 2.9 | |
| t-test | 62.618 | −36.3 | −51.9 | 6.071 | |
| p value | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
| Nasal-superior | Pre-op | 2404.5 ± 208.1 | 390.9 ± 31.1 | 37.6 ± 2.8 | 49.9 ± 6.7 |
| 1mo Post-op | 2140.0 ± 185.2 | 656.9 ± 52.2 | 51.0 ± 5.2 | 46.5 ± 6.5 | |
| Δ | 264.5 ± 22.8 | 266.0 ± 21.1 | 13.4 ± 4.9 | 3.4 ± 1.5 | |
| t-test | 63.473 | −68.983 | −15.039 | 12.338 | |
| p value | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
| Nasal-inferior | Pre-op | 2402.2 ± 207.9 | 399.7 ± 31.7 | 40.9 ± 4.0 | 47.8 ± 6.5 |
| 1mo Post-op | 2209.9 ± 191.2 | 619.8 ± 49.3 | 49.1 ± 5.0 | 45.8 ± 6.3 | |
| Δ | 192.3 ± 16.6 | 220.1 ± 17.5 | 8.2 ± 1.1 | 2.0 ± 0.5 | |
| t-test | 63.310 | −68.697 | −42.232 | 21.977 | |
| p value | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
| Inferior | Pre-op | 2432.7 ± 210.5 | 389.2 ± 34.7 | 42.2 ± 4.2 | 50.9 ± 5.2 |
| 1mo Post-op | 2119.1 ± 209.0 | 574.5 ± 42.9 | 50.7 ± 4.9 | 48.0 ± 6.1 | |
| Δ | 313.64 ± 88.3 | 185.3 ± 18.5 | 8.5 ± 0.9 | 2.9 ± 2.7 | |
| t-test | 19.5 | −55.0 | −51.075 | 5.880 | |
| p value | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
| Temporal-inferior | Pre-op | 2425.3 ± 209.9 | 392.2 ± 34.1 | 37.0 ± 3.3 | 50.8 ± 6.1 |
| 1mo Post-op | 2231.2 ± 193.1 | 579.8 ± 46.1 | 44.7 ± 4.7 | 46.6 ± 6.6 | |
| Δ | 194.1 ± 16.8 | 187.5 ± 16.5 | 7.7 ± 3.3 | 4.2 ± 2.2 | |
| t-test | 63.259 | −62.402 | −12.830 | 10.532 | |
| p value | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
| Temporal-superior | Pre-op | 2353.6 ± 203.8 | 398.4 ± 31.7 | 38.7 ± 3.9 | 49.5 ± 6.5 |
| 1mo Post-op | 2094.8 ± 181.3 | 657.8 ± 52.3 | 53.3 ± 5.3 | 44.4 ± 6.4 | |
| Δ | 258.8 ± 22.5 | 259.4 ± 20.6 | 14.5 ± 1.4 | 5.1 ± 1.7 | |
| t-test | 63.144 | −68.974 | −56.3 | 16.4 | |
| p value | < 0.001 | < 0.001 | < 0.001 | < 0.001 |
Data are presented as mean ± SD. Pre-op, preoperative; 1-mo Post-op, 1-month postoperative. CD, cell density; AVG, average size; CV, coefficient of variation; 6A, hexagonality coefficient. The Δ represents the mean difference (Preoperative − Postoperative).