Which cranial nerve is involved in Weber syndrome?

Ans. is 'b' i.e., III Focal vascular syndromes of the midbrainSyndrome nameRegionVascular supplyAnatomical structure(s)Clinical feature (s)Weber's syndromeMidbrainBranches of PCA and top of basilar arteryOculomotor nerve fasciclesIpsilateral third-nerve palsyClaude's syndromeMidbrain tegmentum nerve palsyBranches of PCA and top of basilar arteryCerebral peduncleOculomotor nerve fasciclesContralateral hemiparesisIpsilateral third-nerve palsy Red nucleus, superior cerebellar peduncle fibersContralaterla ataxiaBenedikt's syndromeMidbrain basis and tegmentumBranches of PCA and top of basilar arteryOculomotor nerve fasciclesIpsilateral third-nerve palsy Cerebral peduncleRed nucleus, substantia nigra, superior cerebellar peduncle fibersContralateral hemiparesisContralateral ataxia, tremor, and involuntary movements