The relationship between corneal biomechanical parameters and treatment outcomes of orthokeratology lenses

BMC Ophthalmology

Table 2 The correlated factors affecting the manifest refraction after OK treatment

Variables	Bivariate correlations*		Multiple linear regression^∆
Variables	correlation coefficients	P	coefficients	P
ARTh	-.588	.002	-0.005	0.003
HC Deflection Area, mm²	.587	.002	0.287	0.002
IOP, mmHg	-.614	.001
CCT, μm	-.558	.004
Deformation amplitude maximum, mm	.617	.001
A1-time, ms	-.581	.002
Peak distance, mm	.431	.035
HC deformation amplitude, mm	.617	.001
HC deflection amplitude, mm	.485	.014
Deflection amplitude max, mm	.439	.028
bIOP, mmHg	-.516	.008

OK Orthokeratology; ARTh Ambrósio’s relational thickness to the horizontal profile; HC Highest concavity; IOP Intraocular pressure; CCT Central corneal thickness; A1- time Time from the initiation of air puff until the first applanation; bIOP Biomechanically corrected intraocular pressure
^∆the regression line:
manifest refraction = -0.02 + 0.285 * HC Deflection Area - 0.005 * ARTh
*Pearson’s correlation

ISSN: 1471-2415