TY - CHAP M1 - Book, Section TI - Disturbances of Vision A1 - Ropper, Allan H. A1 - Samuels, Martin A. A1 - Klein, Joshua P. A1 - Prasad, Sashank Y1 - 2019 N1 - T2 - Adams and Victor's Principles of Neurology, 11e AB - The importance of the visual system is reflected by the magnitude of its representation in the central nervous system. A large part of the cerebrum is committed to vision, including perception of the form and color of objects, the perception of spatial relationships and motion, and the visual control of movements. The optic nerve, which is a tract of the central nervous system, contains more than a million fibers (compared to 50,000 in the auditory nerve). The visual system also has special significance in that study of this system has greatly advanced our knowledge of both the organization of all sensory neuronal systems and the relation of perception to cognition. Indeed, we know more about vision than about any other sensory function. Furthermore, the eyes, because of their diverse composition of epithelial, vascular, neural, and pigmentary tissues, are virtually a medical microcosm, susceptible to many diseases, and its tissues are available for inspection through a transparent medium. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accessmedicine.mhmedical.com/content.aspx?aid=1162590888 ER -