Figure 3: Plastic-embedded sections of eyes 1 day post-injection stained with Toluidine blue. (A, D) Non-injected control eyes. (B, E) BSS-injected control eyes. Overall retinal layers appear normal in non-injected and BSS-injected. Some photoreceptor outer segment and RPE abnormalities are observed in BSS-injected eyes. (C,F,G) Subretinal biopolymer injected eyes showing retinal detachment. The injected biopolymer is seen in the subretinal space in biopolymer injected eyes with no other retinal abnormalities. Rounded phagocytic cells appear to be infiltrating the biopolymer from the RPE layer. (H) Retina appears completely normal outside the detached area in the subretinal biopolymer-injected eye. OS: Outer Segment Layer; IS: Inner Segment Layer; ONL: Outer Nuclear Layer; INL: Inner Nuclear Layer; GCL: Ganglion Cell Layer.