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Table 2 Correlations between biomechanical parameters and corneal sublayer thickness in the normal group

From: Relationship between corneal biomechanical parameters and corneal sublayer thickness measured by Corvis ST and UHR-OCT in keratoconus and normal eyes

  

EPT

BLT

STT

SP-A1a

r

0.184

0.330

0.760

P

0.479

0.195

0.000d

SP-A1c

r

−0.047

−0.152

0.730

P

0.869

0.588

0.000d

A1Va

r

0.016

−0.034

−0.381

P

0.952

0.897

0.131

A2Va

r

−0.082

−0.168

0.116

P

0.753

0.519

0.656

PDa

r

0.051

−0.008

−0.371

P

0.845

0.974

0.143

HCRa

r

0.088

0.079

0.466

P

0.736

0.762

0.059

HCDfAa

r

0.055

−0.008

−0.275

P

0.835

0.974

0.285

IRa

r

−0.155

−0.059

−0.549

P

0.552

0.821

0.023d

ARTha

r

0.264

−0.010

0.465

P

0.307

0.970

0.060

DA ratioa

r

−0.149

−0.025

−0.523

P

0.568

0.924

0.031d

CBIb

r

−0.200

−0.088

−0.519

P

0.442

0.738

0.033d

TBIb

r

−0.159

−0.382

−0.178

P

0.541

0.131

0.495

  1. EPT = epithelial thickness; BLT = Bowman’s layer thickness; STT = stromal thickness; SP-A1 = stiffness parameter at first applanation; A1V = corneal apex velocity at first applanation; A2V = corneal apex velocity at second applanation; PD = peak distance; HCR = highest concavity radius of curvature; HCDfA = deflection amplitude at highest concavity; IR = integrated radius; ARTh = Ambrosio relational thickness to the horizontal profile; DA = deformation amplitude; CBI = Corvis biomechanical index; TBI = tomographic and biomechanical index; aPearson correlation test; bSpearman correlation test; cPartial correlation analysis controlling for the thickness of the other two layers; dP < 0.05
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Eye and Vision

ISSN: 2326-0254