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 Heron in "The Eye of the Heron" are themes common to much of Le Guin's fiction and include the social constructions of gender, interactions between individuals from different societies, intra-actions within societies, and contact with that which is perceived as alien or other. The novel also explores different forms of social and political organization by juxtaposing pacifist anarchism with violent oligarchy. The characters' metaphorical internal journeys are reflected in literal external journeys throughout the plot. When asked, in a 1995 interview, what role the feminist movement had played in her writing, Le Guin situated "The Eye of the Heron" in the