Sclera in lobe-finned fishes, various reptiles, and birds. The ring has disappeared in many groups, including living amphibians, some reptiles and fish, and all mammals. The eyes of all non-human primates are dark with small, barely visible sclera. The collagen of the sclera is continuous with the cornea. From outer to innermost, the four layers of the sclera are: The sclera is opaque due to the irregularity of the Type I collagen fibers, as opposed to the near-uniform thickness and parallel arrangement of the corneal collagen. Moreover, the cornea bears more mucopolysaccharide (a carbohydrate that has among its repeating units a
The Human Factor (1963 The Outer Limits) The Human Factor (1963 The Outer Limits) "The Human Factor" is an episode of the original "The Outer Limits" television show. It first aired on 11 November 1963, during the first season. The title was re-used in 2002 for an episode with an unrelated plot. Doctor James Hamilton develops a device that allows him to experience the thoughts and feelings of another person. At a military outpost in Greenland, Project Engineer Maj. Brothers (Guardino) begins losing his grip on reality - while wrestling with guilt and remorse - after losing one of his soldiers in an icy crevasse. Mentally haunted