Results of histopathology in treated and untreated rats' eyes. This figure shows retinal structure under light microscopy in rats at 2 weeks. The control eye is injected with vehicle (A), and IMS2186 treated eye (B) did not show any structural abnormalities of retina layers (G: ganglion cells, IN: inner nuclear cells, ON: outer nuclear cells, RPE: retinal pigment epithelium cells, Ch: choroids).