Purpose: to assess the multifocal visual evoked potential changes in idiopathic intracranial hypertension patients and to compare conventional visual evoked potential and multifocal visual evoked potential methods in detecting optic pathway affection in idiopathic intracranial hypertension patients.Methods: multifocal visual evoked potentials and conventional visual evoked potentials were recorded during the same session in 30 eyes of idiopathic intracranial hypertension patients with an active electrode at Oz to Fz (Oz-Fz) for the conventional visual evoked potential and the active electrodes of the multifocal visual evoked potential at the inion in the form of cross electrode fixed around the inion and the ground at Fz. Results: 19 eyes (63.3%) of the examined 30 eyes had abnormal conventional visual evoked potential responses; while 11 eyes (36.7%) had normal responses. 28 eyes (93.3 %) of the examined 30 eyes had an abnormal multifocal visual evoked potential responses, while only 2 eyes (6.7%) had normal responses.Conclusion: multifocal visual evoked potentials is superior to the conventional visual evoked potentials in detecting local damage to the optic nerve in idiopathic intracranial hypertension patients; however there was an agreement between results of both tests.