Iris sphincter muscle Iris sphincter muscle The iris sphincter muscle (pupillary sphincter, pupillary constrictor, circular muscle of iris, circular fibers) is a muscle in the part of the eye called the iris. It encircles the pupil of the iris, appropriate to its function as a constrictor of the pupil. It is found in vertebrates and some cephalopods. Initially, all the myocytes are of the smooth muscle type but, later in life, most cells are of the striated muscle type. Its dimensions are about 0.75 mm wide by 0.15 mm thick. In humans, it functions to constrict the pupil in bright light (pupillary light
For Colored Girls Who Have Considered Suicide / When the Rainbow Is Enuf Broadway production. A review by "The New York Times" states: "What Miss Shange prefers to call a "choreopoem" has been expanded into realistic settings that too often resemble the sanitized atmosphere of an episode of "Good Times". The net result has been a considerable reduction in the work's emotional impact." As a result, the televised production is often seen as a diluted version of the original choreopoem. On March 25, 2009, the film industry magazine "Variety" reported that Nzingha Stewart, a black female director, had acquired the feature film rights to "for colored girls who have considered suicide/when the rainbow