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Table 1 Vessel density (ratio) of the superficial and deep retinal layer in 3 different sessions

From: Impact of image quality on OCT angiography based quantitative measurements

  1st session 2nd session 3rd session IQI   P value ICC
SRL 0.408 ± 0.012 0.410 ± 0.011 0.397 ± 0.020 72 1st vs 2nd session 0.4 0.807
      1st vs 3rd session 0.04 0.338
DRLa 0.394 ± 0.022 0.383 ± 0.014 0.447 ± 0.028 73.18 1st vs 2nd session 0.064 0.525
      1st vs 3rd session <0.001 0.063
DRLb 0.132 ± 0.007 0.128 ± 0.008 0.148 ± 0.014 52.29 1st vs 2nd session 0.071 0.660
      1st vs 3rd session <0.001 0.368
  1. SRL superficial retinal layer, IQI image quality index, ICC intraclass correlation coefficient
  2. a DRL deep retinal layer without artefact removal
  3. b DRL deep retinal layer with artefact removal