Figure 2 Phototoxic effects of endoilluminators on A2e laden RPE cells. After ARPE‐19 cells were incubated with A2e to allow intracellular accumulation, they were exposed to light from 20 gauge (A) and 25 gauge (B) endoilluminators for 30 minutes. Cell viability was examined by WST‐1 assay. Cells not exposed to light illumination served as the control. Bars represent mean; error bars indicate standard deviation (n = 6 wells in each experiment). *p<0.05 by ANOVA followed by Bunnett's post hoc test (v non‐irradiated group).