Assessment of Corneal Biomechanical Properties by CorVis ST in Patients with Dry Eye and in Healthy Subjects

Table 3

All parameters derived from CorVis ST in dry eye group and control group, mean ± SD.

Parameters	Dry eye group ()	Control group ()	value	P value
A1-time (ms)			0.05	0.96
A2-time (ms)			0.91	0.37
A1-length (mm)			309.0	0.34
A2-length (mm)			301.5	0.28
A1-V (m/s)			0.22	0.83
A2-V (m/s)			0.23	0.82
HC-time (ms)			223.0	0.02
PD (mm)			353.0	0.86
HC radius (mm)			317.0	0.42
DA (mm)			0.42	0.68
IOP (mmHg)			0.15	0.88
CCT (μm)			0.13	0.90

A1-V: A1-velocity; A2-V: A2-velocity; HC-time: highest concavity-time; PD: peak distance; HC radius: radius at HC; DA: deformation amplitude; IOP: intraocular pressure; CCT: central corneal thickness; -test value; Mann-Whitney test value.