Table 3.
Correlation and relationship significance analysis between input and output parameters of the parametric study.
| Variable | A1 Time (ms) |
A1 Length mm) |
A1 Velocity (mm/s) |
HC Time (ms) |
Peak Dist. (mm) |
A1 Deformation Amp. (mm) | HC Deformation Amp. (mm) | AP1 (mmHg) | SP-HC Stiffness parameter | |
|---|---|---|---|---|---|---|---|---|---|---|
| IOP (mmHg) | Pearson Correlation (r) | 0.725 ** | −0.455 ** | −0.731 ** | −0.255 ** | −0.616 ** | −0.403 ** | −0.635 ** | 0.736 ** | 0.442 ** |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.000 | 0.007 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | |
| CCT (µm) | Pearson Correlation (r) | 0.382 ** | 0.637 ** | −0.206 * | −0.122 | −0.500 ** | 0.673 ** | −0.493 ** | 0.385 ** | 0.468 ** |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.031 | 0.204 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | |
| μ | Pearson Correlation (r) | 0.338 ** | 0.471 ** | −0.367 ** | −0.280 ** | −0.407 ** | 0.432 ** | −0.377 ** | 0.355 ** | 0.434 ** |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.000 | 0.003 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | |
| R (mm) | Pearson Correlation (r) | −0.007 | −0.056 | −0.067 | 0.032 | 0.088 | −0.253 ** | −0.052 | 0.007 | −0.088 |
| Sig. (two-tailed) | 0.946 | 0.564 | 0.486 | 0.741 | 0.362 | 0.008 | 0.592 | 0.945 | 0.362 | |
Note: IOP, intraocular pressure; CCT, central corneal thickness; μ, corneal material stiffness coefficient; R, corneal curvature radius; A1 is the first applanation; HC, highest concavity; AP1, first applanation pressure; SP-HC, stiffness parameter at highest concavity. **: Correlation is significant at the 0.01 level. *: Correlation is significant at the 0.05 level.