Paralysisof 3rd, 4th, 6th nerves with involvement of ophthalmic division of 5th nerve, localizes the lesion to-
Ipsilateral ophthalmoplegia causing diplopia occur due to 3rd, 4th & 6th cranial nerves. 6th nerve passes through cavernous sinus and others are related to the lateral wall of cavernous sinuses. Ref :ak khurana 6th edition pg no 410 REF IMG
Cavernous sinus
Apex of orbit
Brainstem
Base of skull
Diseases of orbit, Lids and lacrimal apparatus