Treat by underlying etiology
Consider neuro/optho consult
Children: Can be treated with alternating patching to decrease probability of developing amblyopia in the affected eye
Adults: Lenses can be fogged with clear tape, paint, or nail polish to decrease diplopia. Neurology can prescribe Fresnel prisms as an alternative.
Giant cell arteritis: treat with prednisone or intravenous Methylprednisolone.
Sixth nerve palsy
Increased intracranial pressure 
Third nerve palsy
Vascular: Aneurysm, central venous sinus thrombosis
Fourth nerve palsy
Inflammatory: Post-viral, demyelinating, sarcoidosis, giant cell arteritis, Miller-Fisher Syndrome variant of Guillian-Barre Syndrome
Ulnar neuropathy
Neoplastic: Lesions in the cerebellopontine angle. In children – pontine glioma