Table 2.
Contralateral Comparison of Biomechanical Parameters Measured by the Ocular Response Analyzer between Keratoconus Eyes with Vogt’s Striae and those without Vogt’s Striae.
| Parameter | With Vogt’s striae | Without Vogt’s striae | ||||
|---|---|---|---|---|---|---|
| Mean ± SD | Range | Mean ± SD | Range | Mean difference | P-value | |
| CH (mmHg) | 8.31 ± 1.08 | 5.40 to 10.40 | 8.89 ± 1.24 | 6.10 to 11.60 | -0.59 ± 1.05 | < 0.001║ |
| CRF (mmHg) | 6.75 ± 1.38 | 4.30 to 10.10 | 7.72 ± 1.46 | 4.10 to 11.70 | -0.97 ± 1.08 | < 0.001 ║ |
| CH-CRF (mmHg) | 1.57 ± 0.69 | -0.10 to 2.70 | 1.18 ± 0.65 | -0.60 to 2.70 | 0.39 ± 0.72 | 0.001* |
| IOPcc (mmHg) | 12.96 ± 1.79 | 11.00 to 17.40 | 13.58 ± 1.92 | 10.50 to 17.70 | -0.63 ± 2.26 | 0.080 * |
| IOPG (mmHg) | 10.79 ± 1.28 | 10.00 to 14.90 | 11.77 ± 1.36 | 11.00 to 18.00 | -0.98 ± 1.36 | < 0.001 * |
CH: corneal hysteresis, CRF: corneal resistance factor, IOPCC: corneal compensated intraocular pressure, IOPG: Goldman correlated intraocular pressure, SD: standard deviation.
Bold values are significant. There were no missing data. A P-value < 0.05 is statistically significant.
*
Wilcoxon signed-rank test,
║
paired-sample t-test.