Figure 4.

(a) The retinal pigment epithelium cells on the Bruch's membrane have multiple intracellular vacuoles, and a choriocapillaris with red blood cells right beneath the Bruch's membrane. A choroidal melanocyte with abundant pigment particles is observed outside the choriocapillaris (Transmission electron microscopy. Br: Bruch's membrane; En: Endothelium; Me: Melanocyte; RBC: Red blood cell) (b) No retinal pigment epithelium cells were observed on the Bruch's membrane where only some pigment particles remained. Spindle-like endothelium of the choriocapillaris was observed right under Bruch's membrane. An intact medium-size choroidal vessel with vascular endothelium cells attached is filled with red blood cells. Between Bruch's membrane and the choroidal vessels are a choroidal melanocyte that is filled with dark granules (Transmission electron microscopy. Br: Bruch's membrane; En: Endothelium; Me: Melanocyte; RBC: Red blood cell)