<prompt> Dilator pupillae is supplied bypostganglionic parasympathetic from Edingerwest phal nucleasPostganglioninc sympathetic from cervical sympathetic chainThird cranial nerveSympathatic fibres of fronto-orbital branch of trigeminal nerve  <response>: ref : A K Khurana ophthalmology 6th edition page no:7 Ganong 23e p261,265 dilator pupillae muscle is supplied by the sympathetic fibers from the carotid plexus which enter the Gasserian ganglion of 5th cranial nerves. ultimately reach the muscle along with long ciliary branches of nasociliary nerves ophthalmic division 5th CN 