Small check size pattern reversal visual evoked potentials (VEPs) in patients with chronic idiopathic intracranial hypertension

The condition known as idiopathic intracranial hypertension is characterized by elevated intracranial pressure. The most feared complication of IIH is visual loss due to papilledema and optic nerve atrophy. Visual evoked potentials are sensitive and non-invasive method. They are considered an important objective test in investigating suspected optic nerve disease. This study aims to clarify the effect of chronic increased ICP on the optic nerve. Methods: This case-control study was performed at Beni-Suef University Hospital on 60 female patients divided into two equal groups; Group (I):  thirty female patients with chronic idiopathic hypertension and Group (II): thirty age and sex-matched healthy controls. All subjects were subjected to full neuro-ophthalmological assessment by PVEP, a lumbar puncture to measure CSF pressure, and radiological assessment using MRI. SPSS version 20 was used for the statistical analysis. Results: Right Pattern reversed VEP; for the check size 15min, the mean value of P100 latencies of chronic IIH was 109.88±10.46 and for controls was 97.35±4.23. The mean value of P100 amplitudes of chronic IIH was 11.73±5 and for controls was 11.95±3.3. Left pattern reversed VEP; for the check size 15min, the mean value of P100 latencies of chronic IIH was 111.42±11.5 and for controls was 97.13±4.32.&nbsp