The pooled average scores of the retinal vessels from 2- and 4-week time points (mean score of the medullary ray vasculature), read from FA of retina. Data obtained 2 days after VEGF injection, including data at 2 and 4 weeks following the intravitreal injection of pSiO2-COO-Dex (“Dex-Cov”), nondrug-loaded control particles (“empty pSiO2”), or free dexamethasone (“Free Dex”), as indicated. Error bars: indicate 1 SEM.