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Table 2 Vascular density and blood flow of the retinal capillary networks and choriocapillaris in eyes with ischemic central retinal vein occlusion (CRVO) compared to non-ischemic CRVO

From: Quantitative measurement of vascular density and flow using optical coherence tomography angiography (OCTA) in patients with central retinal vein occlusion: Can OCTA help in distinguishing ischemic from non-ischemic type?

  CRVO Mean ± SD (range) Diff 95% CI
Non Ischemic Ischemic Lower Upper
Flow in superficial capillary network in 3 × 3 mm image 1.279 ± 0.19 1.014 ± 0.264 .264* 0.098 0.430 0.003
  (0.852–1.583) (0.426–1.308)     
Flow in deep capillary network in 3 × 3 mm image 1.152 ± 0.32 0.873 ± 0.442 .282* 0.005 0.560 0.046
  (0.273–1.539) (0.164–1.349)     
Flow in choriocapillaris in 3 × 3 mm image 1.424 ± 0.51 0.79 ± 0.327 .633* 0.304 0.962 0 < .001
  (0.431–1.931) (0.212–1.431)     
Whole vascular density of superficial capillary network 46.58 ± 4.13 44.24 ± 2.13 2.542* 0.292 4.792 0.028
  (38.93–55.21) (39.67–47)     
Foveal vascular density of superficial capillary network 33.77 ± 8.13 41.32 ± 10.77 − 7.955* − 14.798 − 1.113 0.024
  (22.53–55.67) (23.98–65.34)     
Parafoveal vascular density of superficial capillary network 48.09 ± 4.92 44.73 ± 2.11 3.385* 0.768 6.002 0.013
  (37.3–55.62) (41.76–49.8)     
Parafoveal vascular density of superficial capillary network in temporal area 46.01 ± 5.67 42.34 ± 3.3 4.564* 1.550 7.578 0.005
  (28.03–53.26) (36.55–48.08)     
Parafoveal vascular density of superficial capillary network in superior area 48.75 ± 5.16 44.72 ± 3.46 4.286* 0.957 7.615 0.013
  (36.29–54.99) (38.56–52.2)     
Parafoveal vascular density of superficial capillary network in nasal 48.15 ± 3.86 47.3 ± 4.27 0.715 − 2.177 3.606 0.616
  (40.79–54.16) (41.21–56.28)     
Parafoveal vascular density of superficial capillary network in inferior part 48.23 ± 7.19 44.8 ± 4.71 2.522 − 2.007 7.051 0.263
  (32.56–62.33) (39.59–56.76)     
Whole vascular density of deep capillary network 49.32 ± 3.94 45.28 ± 3.5 4.023* 1.522 6.524 0.003
(40.06–54.78) (39.8–51.4)     
 Foveal vascular density of deep capillary network 30.57 ± 10.61 38.88 ± 13.5 − 10.299* − 18.585 − 2.012 0.017
  (11.31–53.33) (19.63–59.44)     
 Parafoveal vascular density of deep capillary network 51.18 ± 4.2 46.64 ± 4.54 4.340* 1.553 7.127 0.004
  (41.09–57.15) (37.89–52.21)     
 Parafoveal vascular density of deep capillary network in temporal part 48.45 ± 6.63 46.52 ± 5.24 7.167* 3.236 11.099 0.001
  (32.27–57.69) (37.17–54.09)     
Parafoveal vascular density of deep capillary network in superior part 52.81 ± 6.19 45.5 ± 4.89 2.583 − 1.548 6.714 0.210
(36.26–61.63) (36.31–53.82)     
Parafoveal vascular density of deep capillary network in nasal part 51.81 ± 3.95 48.75 ± 7.49 6.218* 0.704 11.732 0.028
(44.81–57.87) (32.25–59.86)     
Parafoveal vascular density of deep capillary network in inferior part 51.04 ± 8.11 45.14 ± 6.31 1.769* 0.655 2.884 0.003
(28.26–61.47) (34.66–54.31)     
Flow in superficial capillary network in 8 × 8 mm image 11.677 ± 1.023 9.739 ± 2.043 3.253* 1.246 5.260 0.002
(10.308–13.76) (5.9–13.131)     
Flow in deep capillary network in 8 × 8 mm image 9.149 ± 2.178 5.965 ± 3.295 6.735* 3.921 9.549 0 < .001
(6.061–13.215) (1.452–10.58)     
Flow in choriocapillaris in 8 × 8 mm image 13.761 ± 3.853 7.383 ± 3.789 .282* 0.005 0.560 0.046
(2.828–17.378) (1.443–15.243)     
  1. P§ based on GEE, SD standard deviation