Iris dilator muscle "musculus dilator pupillae", The "Nomina Anatomica" as authorized in 1895 in Basle and in 1935 in Jena used the full Latin expression. Iris dilator muscle The iris dilator muscle (pupil dilator muscle, pupillary dilator, radial muscle of iris, radiating fibers), is a smooth muscle of the eye, running radially in the iris and therefore fit as a dilator. The pupillary dilator consists of a spokelike arrangement of modified contractile cells called myoepithelial cells. These cells are stimulated by the sympathetic nervous system. When stimulated, the cells contract, widening the pupil and allowing for more light to pass through the eye.
In the Light of What We Know read slowly and meditatively; one is moved to think of Thomas Mann’s "The Magic Mountain"…this powerful debut…is a unique work of fiction bearing witness to much that is unspeakable in human relationships as in international relations.” In a “Books of the Year” feature in "The Times Literary Supplement", Oates further wrote that “among outstanding novels is the impressive debut of Zia Haider Rahman, the meditative, mysterious, decidedly non-page-turner "In the Light of What We Know", a postcolonial novel writ large. The meticulous interweaving of Rahman’s fiction necessitates reading both forward and back, and makes us realize: who cares about “page-turners”