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Table 4 Mean ratio of each parameter in involved eyes with central vein occlusion to their control average

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?

  Total case Non Ischemic CRVO Ischemic CRVO
Mean ± SD Median (IQR) Mean ± SD Median (IQR) Mean ± SD Median (IQR)
Flow in superficial capillary network in 3 × 3 mm image 0.8 ± 0.18 0.82 (0.69–0.94) 0.88 ± 0.13 0.93 (0.8–0.96) 0.7 ± 0.18 0.74 (0.65–0.81)
Flow in deep capillary network in 3 × 3 mm image 0.68 ± 0.26 0.75 (0.57–0.87) 0.75 ± 0.21 0.84 (0.65–0.9) 0.57 ± 0.29 0.67 (0.36–0.85)
Flow in choriocapillaris in 3 × 3 mm image 0.59 ± 0.27 0.5 (0.39–0.89) 0.72 ± 0.26 0.8 (0.52–0.94) 0.4 ± 0.17 0.45 (0.32–0.49)
Whole vascular density of superficial capillary network 0.86 ± 0.07 0.86 (0.82–0.91) 0.88 ± 0.08 0.9 (0.83–0.91) 0.84 ± 0.04 0.84 (0.82–0.86)
Foveal vascular density of superficial capillary network 1.21 ± 0.32 1.14 (0.98–1.42) 1.1 ± 0.27 1.02 (0.97–1.23) 1.35 ± 0.35 1.28 (1.14–1.53)
Parafoveal vascular density of superficial capillary network 0.85 ± 0.08 0.84 (0.8–0.91) 0.87 ± 0.09 0.9 (0.82–0.93) 0.81 ± 0.04 0.81 (0.8–0.84)
Parafoveal vascular density of superficial capillary network in temporal area 0.83 ± 0.09 0.85 (0.76–0.9) 0.86 ± 0.11 0.89 (0.82–0.91) 0.79 ± 0.06 0.78 (0.74–0.83)
Parafoveal vascular density of superficial capillary network in superior area 0.84 ± 0.09 0.84 (0.79–0.92) 0.87 ± 0.09 0.9 (0.8–0.95) 0.8 ± 0.06 0.81 (0.75–0.83)
Parafoveal vascular density of superficial capillary network in nasal 0.89 ± 0.07 0.89 (0.83–0.94) 0.89 ± 0.07 0.9 (0.86–0.95) 0.88 ± 0.08 0.87 (0.81–0.91)
Parafoveal vascular density of superficial capillary network in inferior part 0.84 ± 0.11 0.83 (0.76–0.9) 0.86 ± 0.13 0.88 (0.81–0.93) 0.8 ± 0.08 0.79 (0.74–0.81)
Whole vascular density of deep capillary network 0.82 ± 0.07 0.82 (0.77–0.87) 0.85 ± 0.07 0.86 (0.82–0.89) 0.78 ± 0.06 0.79 (0.72–0.81)
Foveal vascular density of deep capillary network 1.18 ± 0.43 1.1 (0.86–1.44) 1.05 ± 0.37 0.99 (0.86–1.11) 1.34 ± 0.47 1.3 (1.12–1.76)
Parafoveal vascular density of deep capillary network 0.81 ± 0.08 0.83 (0.76–0.86) 0.84 ± 0.07 0.84 (0.81–0.88) 0.77 ± 0.07 0.79 (0.7–0.82)
Parafoveal vascular density of deep capillary network in temporal part 0.79 ± 0.1 0.8 (0.74–0.87) 0.81 ± 0.11 0.83 (0.75–0.89) 0.77 ± 0.09 0.78 (0.69–0.84)
Parafoveal vascular density of deep capillary network in superior part 0.8 ± 0.11 0.82 (0.72–0.87) 0.84 ± 0.1 0.85 (0.82–0.92) 0.73 ± 0.08 0.74 (0.69–0.77)
Parafoveal vascular density of deep capillary network in nasal part 0.86 ± 0.1 0.86 (0.8–0.95) 0.89 ± 0.07 0.88 (0.84–0.95) 0.83 ± 0.13 0.82 (0.77–0.91)
Parafoveal vascular density of deep capillary network in inferior part 0.77 ± 0.13 0.8 (0.67–0.86) 0.81 ± 0.13 0.84 (0.76–0.92) 0.72 ± 0.1 0.73 (0.67–0.78)
Flow in superficial capillary network in 8 × 8 mm image 0.86 ± 0.14 0.87 (0.8–0.98) 0.93 ± 0.08 0.9 (0.86–0.99) 0.77 ± 0.16 0.77 (0.71–0.9)
Flow in deep capillary network in 8 × 8 mm image 0.62 ± 0.25 0.64 (0.48–0.76) 0.73 ± 0.17 0.66 (0.6–0.87) 0.47 ± 0.26 0.47 (0.23–0.71)
Flow in choriocapillaris in 8 × 8 mm image 0.63 ± 0.28 0.61 (0.5–0.88) 0.79 ± 0.22 0.87 (0.66–0.95) 0.42 ± 0.22 0.5 (0.23–0.52)
  1. SD standard deviation; CRVO central retinal vein occlusion, Mean represents the mean ratio of each eye compared to the average of control group