In Vivo Corneal Biomechanical Properties with Corneal Visualization Scheimpflug Technology in Chinese Population

Table 1

Repeatability of the recalculated corneal visualization Scheimpflug technology parameters for three measurements.

Parameters	Precision	Repeatability	CV%	ICC	95% CI for ICC
First applanation time (msec)	0.187	0.264	1.306	0.929	0.901~0.950
First applanation length (mm)	0.113	0.160	3.221	0.223	0.094~0.362
Velocity in (m/sec)	0.018	0.026	6.353	0.695	0.601~0.776
Second applanation time (msec)	0.284	0.401	0.657	0.929	0.901~0.951
Second applanation length (mm)	0.540	0.764	16.153	0.230	0.101~0.369
Velocity out (m/sec)	0.076	0.107	−9.834	0.768	0.690~0.832
Highest concavity time (msec)	0.684	0.966	2.093	0.302	0.171~0.438
Deformation amplitude (mm)	0.069	0.098	3.312	0.942	0.920~0.960
Peak distance (mm)	0.168	0.238	1.701	0.896	0.857~0.927
Highest concavity radius (mm)	1.136	1.606	8.320	0.605	0.495~0.704
Intraocular pressure (mmHg)	1.696	2.397	6.245	0.894	0.854~0.925
Central corneal thickness (μm)	9.642	13.627	0.925	0.983	0.976~0.988

. CV: coefficient of variation; ICC: intraclass correlation coefficient; 95% CI: 95% confidence interval of the mean.