Table 2 Analysis of OCT-A parameters.

From: Retinal and choriocapillaris perfusion are associated with ankle-brachial-pressure-index and Fontaine stage in peripheral arterial disease

  

Association with max. Fontaine stagea

Correlation with ABIb

Comparison of eyes from healthy controls and patients with PADc

OCT-A parameter

 

p

r

CI

p

Controls (Mean ± SD)

PAD (Mean ± SD)

Difference [CI]

p

Vessel density

Superficial retina

0.0032

0.42

0.23–0.58

 < 0.0001

0.289 ± 0.022

0.276 ± 0.033

 − 0.013 [− 0.002– − 0.024]

0.021

Deep retina

0.29

0.25

0.056–0.43

0.012

0.056 ± 0.014

0.052 ± 0.016

 − 0.0047 [0.0017– − 0.0110]

0.14

Non-perfused choriocapillaris area

 

0.0019

 − 0.22

 − 0.40– − 0.028

0.026

40.78 ± 5.44%

44.42 ± 4.12%

3.64 [1.38–5.90]

0.0024

  1. aKruskal–Wallis test; bPearson correlation; ct-test / Wilcoxon rank sum test; ABI = ankle-brachial-pressure-index; CI = confidence interval; OCT-A = optical coherence tomography angiography; PAD = peripheral arterial disease.
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