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Table 2 Comparison of Peripapillary Vessel Density Changes After Silicone Oil Removal Between Affected and Contralateral Eyes (n = 22)

From: Effect of silicone oil on peripapillary capillary density in patients with rhegmatogenous retinal detachment

Measurements Affected eyes Contralateral eyes
Global RPC VD Before SOR 46.8 ± 3.7% 51.0 ± 3.3%
After SOR 48.1 ± 3.8% 50.6 ± 3.4%
Change 1.3% (0.3 to 2.3%) − 0.4% (− 1.4 to 0.7%)
Difference of changea 1.9% (0.6 to 3.2%), P = 0.007
Superior RPC VD Before SOR 46.8 ± 3.9% 51.1 ± 3.8%
After SOR 48.4 ± 3.6% 50.8 ± 3.8%
Change 1.6% (0.6 to 2.7%) −0.4% (−1.4 to 0.7%)
Difference of changea 2.2% (0.9 to 3.4%), P = 0.002
Inferior RPC VD Before SOR 46.7 ± 4.3% 50.8 ± 3.2%
After SOR 47.7 ± 4.4% 50.4 ± 3.5%
Change 1.0% (−0.2 to 2.1%) −0.4% (−1.5 to 0.7%)
Difference of changea 1.6% (−0.0 to 3.2%), P = 0.06
  1. Vessel densities before and after silicone oil removal are described as mean ± SD
  2. Changes in vessel densities are described as mean (95% confidence interval)
  3. aDifference of change in vessel densities between affected and contralateral eyes was analyzed using mixed model analysis and presented as mean (95% confidence interval). The P value represents the main effect of SOR with changes in intraocular pressure and OCT angiography image quality score adjusted as covariates
  4. RPC Radial Peripapillary Capillaries, VD Vessel Density, SOR Silicone Oil Removal