Figure 7.

Effects on ARPE-19 cell viability of different concentrations of vitamin C for 1 h exposure to visible light (ATR, light) or incubation in the dark (ATR, dark) in the presence of liposomes containing 0.5 mM of ATR and 7 mg/mL of EYPC. Control cells in light-exposed plates were exposed to vitamin C and EYPC liposomes in the absence of ATR (No ATR, light). Cell viability was measured by MTT assay 24 h after the exposure. The symbols represent data from individual experiments, crosses represent the means, while the error bars represent SDs.