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Table 3 Correlations between the duration of the disease, the total UPDRS score, HY staging and OCT parameters

From: Optical coherence tomography in patients with Parkinson’s disease

OCT parameters

Duration of disease (years)

UPDRS scores

HY staging

(r)

p value

(r)

p value

(r)

p value

RNFL thickness

      

 Superonasal

− 0.221

0.232

− 0.077

0.682

0.003

0.987

 Inferonasal

− 0.201

0.278

− 0.108

0.564

− 0.028

0.879

 Nasal

− 0.335

0.065

− 0.389

0.030*

− 0.250

0.175

 Superior temporal

− 0.308

0.092

− 0.210

0.258

− 0.241

0.191

 Inferior temporal

− 0.319

0.080

− 0.328

0.072

− 0.399

0.026

 Temporal

− 0.259

0.160

− 0.371

0.040*

− 0.413

0.021*

Macular measurements

      

 Central foveal thickness

− 0.304

0.091

− 0.329

0.066

− 0.441

0.011*

 Superior parafoveal thickness

− 0.337

0.059

− 0.219

0.228

− 0.433

0.013*

 Inferior parafoveal thickness

− 0.387

0.029*

− 0.391

0.027*

− 0.605

 < 0.001*

 Nasal parafoveal thickness

− 0.341

0.056

− 0.391

0.027*

− 0.649

 < 0.001*

 Temporal parafoveal thickness

− 0.401

0.023*

− 0.321

0.073

− 0.544

0.001*

 Macular volume

− 0.411

0.019*

− 0.458

0.008*

− 0.545

0.001*

GCC thickness

      

 Average

− 0.403

0.022*

− 0.484

0.005*

− 0.511

0.003*

 Superior

− 0.421

0.017*

− 0.476

0.006*

− 0.482

0.005*

 Inferior

− 0.358

0.044*

− 0.460

0.008*

− 0.515

0.003*

  1. UPDRS Unified Parkinson’s Disease Rating Scale, HY Hoehn and Yahr, OCT optical coherence tomography, RNFL retinal nerve fiber layer, GCC ganglion cell complex
  2. *Statistically significant