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Table 2 The Number of OCTA Images Displaying Choroidal Vessels and Similarity Between OCTA and en-face OCT Images in Fixed Depth Series

From: Visualization of deep choroidal vasculatures and measurement of choroidal vascular density: a swept-source optical coherence tomography angiography approach

Depth beneath BM (μm)

Number (%) of OCTA images displaying choroidal vessels

Similarity between OCTA and en-face OCT images (mean ± SD%)

50 (n = 91)

27 (29.7)

74.7 ± 4.2

100 (n = 91)

91 (100.0)

82.0 ± 2.6

150 (n = 89)

79 (88.8)

76.7 ± 6.5

200 (n = 86)

67 (77.9)

72.0 ± 7.2

250 (n = 69)

35 (51.5)

66.5 ± 6.2

300 (n = 58)

6 (10.3)

58.8 ± 6.4

350 (n = 44)

0 (0.0)

57.4 ± 7.2

400 (n = 23)

0 (0.0)

57.3 ± 5.7

450 (n = 7)

0 (0.0)

52.9 ± 1.5

500 (n = 4)

0 (0.0)

50.5 ± 0.5

550 (n = 1)

0 (0.0)

50.0

  1. The optimal fixed depth with the largest percentage of OCTA images displaying choroidal vessels and the greatest similarity between OCTA and en-face OCT images is shown in bold
  2. BM Bruch membrane, OCTA optical coherence tomography angiography, OCT optical coherence tomography