Fig. 4

Clinical and histological effects of retroorbital plexus (RP) blood collection. a Proportions of sunken eyes (left) and cataracts (right). b Histology of ocular tissues (hematoxylin and eosin, magnification × 10, × 40, × 100, × 200, and × 400, scale bar: 2 mm, 500 μm, 200 μm, 100 μm, and 50 μm). Arrows indicate infiltrations of red blood cells, mononuclear cells, monocytes, and granulocytes such as neutrophils