Table 2.
Refractive and tomographic changes after transepithelial re-crosslinking.
| Before re-crosslinking | 3 months | 6 months | 12 months | 24 months | |||||
|---|---|---|---|---|---|---|---|---|---|
| (n = 21) | Mean ± SD | Mean ± SD | p | Mean ± SD | p | Mean ± SD | p | Mean ± SD | p |
| UCVA | 1.02 ± 0.32 | 1.03 ± 0.32 | 1.000 | 1.07 ± 0.38 | 0.524 | 1.04 ± 0.35 | 1.000 | 1.03 ± 0.36 | 1.000 |
| BCVA | 0.34 ± 0.09 | 0.31 ± 0.11 | 1.000 | 0.32 ± 0.13 | 1.000 | 0.36 ± 0.14 | 1.000 | 0.34 ± 0.13 | 1.000 |
| Sphere, D | −3.86 ± 2.79 | −3.46 ± 1.93 | 1.000 | −3.58 ± 2.17 | 1.000 | −3.63 ± 2.35 | 1.000 | −3.61 ± 2.33 | 1.000 |
| Cylinder, D | −3.48 ± 1.67 | −2.74 ± 1.36 | 0.178 | −2.82 ± 1.42 | 0.205 | −3.04 ± 1.19 | 0.984 | −2.98 ± 1.17 | 0.654 |
| SE, D | −5.60 ± 2.98 | −4,83 ± 2.01 | 0.619 | −4.99 ± 2.29 | 0.629 | −5.15 ± 2.48 | 1.000 | −5.10 ± 2.48 | 1.000 |
| K1, D | 52.25 ± 4.98 | 52.00 ± 4.93 | 0.389 | 52.20 ± 5.18 | 1.000 | 52.39 ± 5.40 | 1.000 | 52.36 ± 5.40 | 1.000 |
| K2, D | 56.87 ± 4.56 | 56.20 ± 4.82 | 0.022 | 56.21 ± 4.90 | 0.036 | 56.55 ± 5.16 | 1.000 | 56.50 ± 5.17 | 1.000 |
| Kmax, D | 63.48 ± 6.31 | 62.45 ± 6.86 | 0.027 | 62.44 ± 6.80 | 0.179 | 62.59 ± 7.59 | 1.000 | 62.59 ± 7.56 | 1.000 |
| Minimal thickness, μm | 409.9 ± 29.7 | 390.4 ± 32.1 | <0.001 | 404.3 ± 28.5 | 0.085 | 405.5 ± 26.9 | 0.105 | 405.0 ± 27.4 | 0.067 |
| EC, cells/mm2 | 2668 ± 220.0 | 2642 ± 177.6 | 1.000 | 2641 ± 188.7 | 1.000 | 2644 ± 192.2 | 1.000 | 2644 ± 187.1 | 1.000 |
| IOP, mm Hg | 13.42 ± 2.03 | 14.00 ± 2.42 | 1.000 | 13.49 ± 1.64 | 1.000 | 13.39 ± 1.92 | 1.000 | 13.45 ± 1.88 | 1.000 |
UCVA uncorrected visual acuity, BCVA best corrected visual acuity, SE spherical equivalent, EC endothelial cell, IOP intraocular ocular pressure.