Sphincter and dilator pupillae develops from
HUMAN EMBRYOLOGY-INDERBIR SINGH tenth edition Derivatives of neuroectoderm: R-Retina O-Optic stalk/optic nerve M-Muscles of iris(sphicter and dilator pupillae) E-Epithelium of iris/ciliary body
Neuroectoderm
Surface ectoderm
Mesoderm
Endoderm
General anatomy