Research Article
Keratoconus Diagnosis: Validation of a Novel Parameter Set Derived from IOP-Matched Scenario
Table 1
Biomechanical parameters derived from the Corvis ST software and their corresponding definitions.
| Parameters | Abbreviation | Definitions |
| The time of the first applanation (ms) | AT1 | The length of time from the initiation of air puff to the first applanation | The time of the second applanation (ms) | AT2 | The length of time from the initiation of air puff to the second applanation | The length of the first applanation (mm) | AL1 | The lengths of flattened cornea at the first applanation | The length of the second applanation (mm) | AL2 | The lengths of flattened cornea at the second applanation | The velocity of the first applanation (m/s) | | Speed of corneal apex at the first applanation | The velocity of the second applanation (m/s) | | Speed of corneal apex at the second applanation | The time of highest concavity (ms) | HC-time | Time from the initiation of air puff until the highest concavity of the cornea | DA Ratio Max 1 mm | DRM1 | Maximum ratios of corneal deformation at the apex divided by the average deformation 1 mm to either side of the apex | Peak distance (mm) | PD | Distance of the two knees at highest concavity | Deformation amplitude (mm) | DA | Maximum deformation amplitude at highest concavity | The highest radius of concavity (mm) | HC-radius | Corneal concave curvature at its highest concavity |
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