Retinal damage in the oxygen-induced retinopathy (OIR) model and normal mice.

<p>Retinal cross sections were prepared at 4 w and 8 w. (A) Hematoxylin and eosin staining. Scale bar, 50 µm. Retinal damage was evaluated by counting the number of cells in the GCL (B) and measuring the thickness of the IPL (C), INL (D), and ONL (E) in mice at 4 w and 8 w. Values are expressed as the mean ± S.D., n = 5 or 6. ^*<i>P</i><0.05, ^**<i>P</i><0.01 versus Normal. GCL, ganglion cell layer; IPL, inner plexiform layer; INL, inner nuclear layer; ONL, outer nuclear layer; OIR, oxygen-induced retinopathy model.