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. Author manuscript; available in PMC: 2009 Apr 7.
Published in final edited form as: Br J Ophthalmol. 2008 May;92(5):705–711. doi: 10.1136/bjo.2007.133587

Figure 4.

Figure 4

(A) Photograph taken under a surgical microscope immediately after intravitreal injection of hydrosilylated porous Si particles. Particles can be observed suspended in the centre of the vitreous. (B) Fundus photograph obtained 3 months after injection. The particles are dispersed in the vitreous, and many demonstrated a distinctive blue colour corresponding to partial degradation and dissolution. (C) Dissecting microscope image of a rabbit eye cup, with hydrosilylated porous Si particles (small arrows) distributed on a normal-looking retina. Photograph was obtained 4 months after injection. Two white areas (large arrows) evident in the image arise from reflections of the illumination source. (D) Scanning electron microscope image of the hydrosilylated porous Si particles sampled from a rabbit eye 4 months after intravitreal injection. The sharp edges and pitted surface of the particles indicate a very slow erosion process.