Table 2: Etiology of fourth and sixth nerve palsies

Etiology	Nerve Palsy No. of patients (%)
	Fourth	Sixth
Congenital	39 (37.9)	2 (2.7)
Traumatic	13 (12.7)	18 (24.7)
Vascular	13 (12.7)	13 (17.8)
Intracranial mass	- (0)	13 (17.8)
Other*	10 (9.8)	12 (16.5)
Undetermined	27 (26.9)	15 (20.5)
Total	103 (100)	73 (100)

*Lymphomas of the central nervous system and acute myeloblastic lymphoma.