Table 1. Summary statistics for age, IOP, OPA, Kmax, thinnest pachymetry, CCT, CAD, and CSI in 20 normal subjects (40 eyes) and 20 keratoconus patients (35 eyes).
| Normal | KC | P* | P** | |
|---|---|---|---|---|
| Age (years) | 43 ± 15 | 37 ± 12 | 0.20 | NA |
| Diastolic IOP (mmHg) | 16.3 ± 2.5 | 15.6 ± 3.4 | 0.47 | NA |
| OPA (mmHg) | 2.56 ± 0.84 | 2.24 ± 0.89 | 0.21 | 0.26 |
| Kmax (D) | 45.0 ± 1.91 | 57.4 ± 13.4 | <0.001 | <0.001 |
| Thinnest Pachymetry (μm, Pentacam) | 531 ± 28 | 447 ± 63 | <0.001 | <0.001 |
| CCT (μm, Ultrasound) | 535 ± 30 | 448 ± 74 | <0.001 | <0.001 |
| CAD (μm) | 34.6 ± 10.3 | 47.8 ± 16.5 | 0.004 | 0.009 |
| CSI (mmHg/μm) | 0.082 ± 0.038 | 0.051 ± 0.022 | 0.003 | 0.007 |
* Without IOP and age as covariates
** IOP and age as covariates in the linear mixed model