(二)血管膜或中膜 l、虹膜Iris 口瞳孔 pupil a Contains sphincter pupillae瞳孔括约肌 (circular fibers)and dilator pupillae瞳孔开 大肌( radial fibers o Cornea and iris meet to form the iridocorneal angle虹膜角膜角（二）血管膜或中膜 1、虹膜Iris ❑ 瞳孔pupil ❑ Contains sphincter pupillae 瞳孔括约肌 (circular fibers) and dilator pupillae 瞳孔开 大肌 (radial fibers) ❑ Cornea and iris meet to form the iridocorneal angle 虹膜角膜角 Up