Sclera Sclera The sclera, also known as the white of the eye, is the opaque, fibrous, protective, outer layer of the human eye containing mainly collagen and some elastic fiber. In humans, the whole sclera is white, contrasting with the coloured iris, but in other mammals the visible part of the sclera matches the colour of the iris, so the white part does not normally show. In the development of the embryo, the sclera is derived from the neural crest. In children, it is thinner and shows some of the underlying pigment, appearing slightly blue. In the elderly, fatty deposits on
The Eye of the Sibyl his "Exegesis", and later the novels "VALIS", the posthumously published precursor to VALIS, "Radio Free Albemuth", and "The Divine Invasion". Eventually rejected by the venue for which it was written, the major points of Dick's 1975 worldview are set forth, in a style reminiscent of his earlier work, and very similar to his treatment of this material in his later books. The Eye of the Sibyl "The Eye of the Sibyl" is a science fiction short story by American writer Philip K. Dick. It was written sometime around 1975, but not published until 1987 when it was included in volume