TY - CHAP M1 - Book, Section TI - Chapter 29. Disorders of the Iris and Pupil A1 - Lueder, Gregg T. Y1 - 2011 N1 - T2 - Pediatric Practice: Ophthalmology AB - The iris is a structure composed of connective tissue and blood vessels that lies just anterior to the lens. The central opening in the iris forms the pupil. The color of the iris is determined by pigmented cells within the stroma. Pigment may accumulate in these cells during the first year of life, and the color of the iris often changes during this time. The posterior layer of the iris is deeply pigmented. It extends slightly onto the anterior surface at the edge of the pupil. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/03/28 UR - accesspediatrics.mhmedical.com/content.aspx?aid=56151570 ER -