Sclera nitrogenous sugar, hexosamine) to embed the fibrils. The cornea, unlike the sclera, has five layers. The middle, thickest layer is also called the stroma. The sclera, like the cornea, contains a basal endothelium, above which there is the lamina fusca, containing a high count of pigment cells. Sometimes, very small gray-blue spots can appear on the sclera, a harmless condition called scleral melanocytosis. Human eyes are somewhat distinctive in the animal kingdom in that the sclera is very plainly visible whenever the eye is open. This is not just due to the white colour of the human sclera, which many
The Mind's Eye & Mission of the Viyrans The Mind's Eye & Mission of the Viyrans The Mind's Eye is a Big Finish Productions audio drama based on the long-running British science fiction television series "Doctor Who". It is a three-part story written by Colin Brake and was released alongside a one-part story, "Mission of the Viyrans". The Doctor, Erimem and Peri have gone their separate ways. The Doctor is wandering on a nameless paradise planet filled with murderous primates (but only at night) and carnivorous plants. Erimem is the Queen of a space colony empire, New Cairo, and is suffering a rebellion, while Peri's stepson and new