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Table 7 Correlation of eye rubbing frequency and ocular allergic sign scores with corneal tomographic, biomechanical and epithelial thickness parameters in the allergic conjunctivitis (AC) group

From: Corneal biomechanical changes in allergic conjunctivitis

  

Corneal tomography

TBI

Epithelial thickness

ISV

IVA

KI

IHD

BAD-D

2–5 mm

5–7 mm

min

SD

Eye rubbing

r

0.348

0.362

0.228

0.276

0.424

0.341

−0.648

−0.553

−0.443

0.122

pa

0.059

0.049*

0.225

0.140

0.020*

0.065

< 0.001*

0.002*

0.014*

0.522

Hyperemia

r

0.293

0.034

−0.103

0.066

0.084

0.143

0.075

−0.147

−0.337

0.391

pa

0.115

0.857

0.590

0.729

0.658

0.451

0.695

0.439

0.068

0.033*

Swelling

r

0.638

0.295

0.179

0.292

0.291

0.315

−0.122

−0.366

−0.560

0.641

pa

< 0.001*

0.113

0.345

0.118

0.119

0.090

0.521

0.047*

0.001*

< 0.001*

Papillae

r

0.520

0.313

0.330

0.295

0.066

0.105

0.043

−0.189

−0.401

0.467

pa

0.003*

0.092

0.075

0.113

0.729

0.580

0.821

0.317

0.028*

0.009*

Epithelial disorder

r

0.584

0.340

0.308

0.314

0.401

0.370

−0.318

−0.497

−0.608

0.471

pa

0.001*

0.066

0.098

0.091

0.028*

0.044*

0.087

0.005*

< 0.001*

0.009*

  1. AC = allergic conjunctivitis; ISV = index of surface variance; IVA = index of vertical asymmetry; KI = keratoconus index; IHD = index of height decentration; BAD-D = Belin/Ambrosio enhanced ectasia total deviation index; TBI = tomography and biomechanical index; min = minimum; SD = standard deviation
  2. a Statistically significant findings (P < 0.05) are indicated by an asterisk