Figure 6.

Binary masks defining the luminal surface of three retinal plexuses obtained at two different stages of development. All plexuses are presented with the area closer to the optic disc at the bottom of the image and the sprouting front at the top. In all samples studied, arteries tend to be thinner and have less daughter vessels than veins. Vessels close to the sprouting front tend to have less well-defined identity with luminal diameters comparable to arteries/veins. This is particularly notable in the P5 samples. Vessel density is also higher close to the sprouting front in P5 retinas.