| Corvis ST parameters | Description |
|---|---|
| IOP [mmHg]* | The Intraocular pressure, calculated from A1 |
| Pachymetry [μm] * | Central corneal thickness, measured with optical pachymetry |
| A1 time [ms] * | Time to first (inward) applanation |
| A1 length [mm]* | Length of first (inward) applanation |
| A1 velocity [m/s]* | Velocity of the corneal apex at first applanation |
| A1 deformation amplitude [mm] | Sagittal deformation length of the apex at first applanation |
| A1 deflection length [mm] | Horizontal length of the deformed part of the cornea at first applanation |
| A1 deflection amplitude [mm] | Deformation amplitude corrected for whole eye movement at first applanation |
| HC deformation amplitude [mm] * | Sagittal deformation length of the apex at highest concavity |
| HC time [ms] * | Time to reach highest concavity |
| HC radius [mm] * | Radius of curvature at highest concavity, calculated with “parabolic fit” |
| HC deflection length [mm] | Horizontal length of the deformed part of the cornea at highest concavity |
| HC deflection amplitude [mm] | Deformation amplitude corrected for whole eye movement at highest concavity |
| HC deflection amplitude [ms] | Time of highest concavity deflection amplitude |
| Peak distance [mm] * | Distance between peak points at highest concavity |
| A2 time [ms] * | Time to reach second (outward) applanation |
| A2 length [mm] * | Length of second (outward) applanation |
| A2 velocity [m/s] * | Velocity of the corneal apex at second applanation |
| A2 deformation amplitude [mm] | Sagittal deformation length of the apex at second applanation |
| A2 deflection length [mm] | Horizontal length of deformed part of the cornea at second applanation |
| A2 deflection amplitude [mm] | Deformation amplitude corrected for whole eye movement at second applanation |