**Figure 2. **H&E and TUNEL staining of retina sections. **A**: Representative light microscopic images of H&E staining retina sections. Scale bar: 100 μm. ONL, outer nuclear layer; OPL,
outer plexiform layer; INL, inner nuclear layer; IPL, inner plexiform layer; GCL, ganglion cell layer. **B**: Images of TUNEL staining of retinal sections. **C**: Quantitative analysis of percentages of TUNEL-positive cells in retinal sections. The data are the mean ± standard error
of mean (SEM; n=5). ** indicates a statistical significance with p value <0.01 compared to the control group.