Posterior segment. Retina light microscopy: PAS and eosin (A and C) and haematoxylin and eosin (B, D, E, F, G and H) stained retinas. A, B, C and D are retinas from different LT-DBT animals. Arrows in picture A, B, C and D are pointing to vessel dilations in the outer plexiform layer. E, F, G and H show the LT-Control retina. Bar 20 μm. Optic nerve. Haematoxylin and eosin (I and K) and PAS and eosin (J) staining from transverse sections of the optic nerve, I and J: LT-DBT animals with vessels from nerve to vitreous (arrows) and K: normal optic nerve from LT-Controls. Bar 20 μm.