Table 3.
Comparison of Biomechanical Parameters Measured by Corvis ST 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 | |
| Peak distance (mm) | 5.11 ± 0.23 | 4.67 to 5.73 | 5.14 ± 0.26 | 4.17 to 5.69 | -0.03 ± 0.20 | 0.291 |
| Radius (mm) | 5.29 ± 0.84 | 3.10 to 6.65 | 6.40 ± 0.94 | 3.66 to 8.31 | -1.11 ± 0.87 | < 0.001 |
| DA (mm) | 1.18 ± 0.11 | 1.01 to 1.43 | 1.12 ± 0.11 | 0.88 to 1.36 | 0.06 ± 0.11 | < 0.001 |
| CCT (m) | 457.42 ± 38.14 | 371.00 to 542.00 | 479.42 ± 36.17 | 397 to 550 | -22.00 ± 22.06 | < 0.001 |
| IOP (mmHg) | 13.76 ± 1.16 | 12.00 to 17.00 | 14.15 ± 1.28 | 11.00 to 17.50 | -0.39 ± 1.05 | 0.012 |
DA: deformation amplitude, CCT: central corneal thickness, IOP: intraocular pressure, SD: standard deviation.
Bold values are significant. There were no missing data. A P-value <0.05 is statistically significant.
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paired-sample t-test.