Table 1.
Demographic characteristics, visual, refractive and corneal topographic outcomes of study patients during preoperative and postoperative period.
| Preoperative | 1 Month | 3 Month | 6 Month | 12 Month | P | |
|---|---|---|---|---|---|---|
| Gender | ||||||
| Male (%) | 38 (77.6) | |||||
| Female (%) | 11 (22.4) | |||||
| Age in years | ||||||
| (mean ± SD) | 29.54 ± 7.34 | |||||
| Right eye (%) | 34 (52.3) | |||||
| Left eye (%) | 31 (47.7) | |||||
| Average duration between CLX and KeraNatural implantation | 60.9 ± 42.1 | |||||
| UCVA (logMAR) | 0.91 ± 0.50 | 0.39 ± 0.28 | 0.38 ± 0.31 | 0.40 ± 0.24 | 0.36 ± 0.25 | 0.001a,b,c,d |
| CDVA (logMAR) | 0.87 ± 0.20 | 0.27 ± 0.06 | 0.36 ± 0.15 | 0.31 ± 0.09 | 0.36 ± 0.15 | 0.001a,b,c,d |
| SE (D) | −8.82 ± 4.57 | −3.92 ± 5.41 | −3.55 ± 5.44 | −3.45 ± 4.81 | −2.32 ± 4.95 | 0.001a,b,c,d |
| K1 (D) | 47.17 ± 4.97 | 44.36 ± 5.24 | 44.28 ± 5.18 | 43.60 ± 4.84 | 42.96 ± 4.63 | 0.001a,b,c,d |
| K2 (D) | 51.50 ± 5.67 | 48.28 ± 5.45 | 48.26 ± 5.63 | 47.91 ± 5.20 | 47.81 ± 5.20 | 0.001a,b,c,d |
| K max (D) | 59.20 ± 7.66 | 56.75 ± 7.72 | 56.14 ± 7.70 | 55.83 ± 6.96 | 55.63 ± 6.14 | 0.001a,b,c,d |
| K average (D) | 49.23 ± 5.22 | 46.23 ± 5.25 | 46.17 ± 5.27 | 45.63 ± 4.89 | 45.23 ± 4.77 | 0.001a,b,c,d |
| CCT (µ) | 463.62 ± 54.88 | 449.69 ± 36.72 | 450.38 ± 48.74 | 447.46 ± 50.57 | 447.31 ± 56.35 | 0.18 |
| AME (µ) | 34.45 ± 11.67 | 20.27 ± 11.86 | 19.09 ± 11.62 | 19.09 ± 11.51 | 18.00 ± 10.07 | 0.001(a,b,c,d) |
| PME (µ) | 68.09 ± 6.27 | 54.72 ± 8.59 | 56.27 ± 8.41 | 59.18 ± 10.34 | 64.09 ± 9.03 | 0.01a,b |
| BFS anterior (R) | 7.55 ± 0.12 | 7.81 ± 0.13 | 7.81 ± 0.14 | 7.80 ± 0.12 | 7.79 ± 0.14 | 0.001a,b,c,d |
| BFS posterior (R) | 6.07 ± 0.08 | 6.25 ± 0.11 | 6.29 ± 0.11 | 6.39 ± 0.15 | 6.22 ± 0.10 | 0.001a,b,c |
| Anterior elevation | 9.30 ± 5.96 | 3.60 ± 5.67 | 2.84 ± 5.19 | 2.37 ± 6.19 | 2.17 ± 5.30 | 0.001a,b,c,d |
| Posterior elevation | 20.11 ± 3.63 | 15.49 ± 3.47 | 17.88 ± 2.78 | 18.96 ± 3.85 | 18.40 ± 3.69 | 0.05 |
All data were presented as mean or median ± standard deviation.
UCVA uncorrected distance visual acuity, log MAR log of the minimum angle of resolution, CDVA corrected distance visual acuity, SE spherical equivalent, K keratometry, CCT central corneal thickness, AME anterior maximum elevation, PME posterior maximum elevation, BFS best-fit sphere.
P values; repeated measures ANOVA or Friedman’s test.
Comparative analysis based on Post hoc tests: ap < 0.05: preoperative vs. postoperative 1st month; bp < 0.05: preoperative vs. postoperative 3rd month; cp < 0.05: preoperative vs. postoperative 6th month; dp < 0.05: preoperative vs. postoperative 12th month. Bold values are statistically significant.