سبب شناسي فلج عصب اكولوموتور در 28 بيمار مراجعه كننده به درمانگاه نوروافتالمولوژي بيمارستان فارابي

Etiology of Oculomotor Palsy: A Case Series of 28 Patients

Purpose: To assess the etiology of oculomotor nerve palsy among 28 patients at Farabi Eye Hospital, Tehran-Iran. Methods: This case series includes 28 patients with third nerve palsy. The diagnosis were divided into six groups based on symptoms and paraclinical studies: ischemic, traumatic, aneurysm, neoplasm, miscellaneous, and undetermined. Results: Out of 28 patients, 9 (30%) had diabetes mellitus. The chief complain was mostly ptosis (79%). The pupil was normal in 16 patients (57%) and mydriatic in 12 patients (43%). The etiology was ischemic in 43%, traumatic in 14%, aneurysm in 7%, tumor in 7%, miscellaneous in 11%, and undetermined in 18% of the cases. Conclusion: The most common cause of oculomotor nerve palsy is ischemic lesions and the most common risk factor is diabetes mellitus. Further studies to assess the relationship between third nerve palsy and blood sugar control is suggested.