Table 1.

Description of Corvis ST parameters. *: Parameters avaliable with the first software version.

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