Comprehensive Review of Anatomy and Features of Oculomotor Nerve Palsy

The oculomotor nerve, with its intricate nucleus complex, plays a pivotal role in controlling eye movements and pupil size. Understanding the anatomy and localization of lesions within this complex is critical for accurate diagnosis and effective management. Third-nerve palsy can manifest in multiple ways, including nuclear lesions, fascicular syndromes, and involvement of different anatomical portions such as the subarachnoid space, cavernous sinus, and orbital region. Etiologies vary with common causes being ischemia, aneurysms, and neoplasms, while rarer conditions such as recurrent painful ophthalmoplegic neuropathy and congenital palsy present their own unique challenges. This review article explains comprehensively about the topographical location of third-nerve palsy and the varies clinical manifestations noted with the comment on aberrant degeneration.