Figure 6: MR images obtained in ~P50 Sprague-Dawley RAR (a) and ROP (b) rats and Long-Evans RAR (c) and ROP (d) rats. All images are displayed at the same magnification (scale bars are 1 mm). The ROP rat images (b, d) are mirrored to eliminate nasal-temporal asymmetries, if any. Note that the ROP rat eyes are characterized by steeper corneae and relatively reduced anterior segment depths. Note also that the Sprague-Dawley ROP rat has a short axial length.