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[Visual evoked potentials in benign intracranial hypertension]
1Servicio de Neurología, Hospital Universitario Virgen del Rocío, Sevilla.
Neurologia (Barcelona, Spain)
|August 1, 1991
Summary
Benign intracranial hypertension (BIH) can prolong visual evoked potential (VEP) P100 latencies, even after funduscopy normalizes. Prolonged latencies may indicate a risk for visual sequelae in BIH patients.
Area of Science:
- Neuro-ophthalmology
- Electrophysiology
Context:
- Benign intracranial hypertension (BIH) is a condition characterized by increased intracranial pressure without a clear cause.
- Visual evoked potentials (VEPs) are used to assess the integrity of the visual pathway.
Purpose:
- To investigate the P100 latency of VEPs in patients with BIH.
- To determine the correlation between VEP P100 latency and visual sequelae in BIH patients.
Summary:
- A study of 20 BIH patients revealed significantly increased mean P100 latencies compared to controls.
- Abnormal latencies persisted even after funduscopy normalized, returning to baseline levels one year after BIH resolution.
- One patient with progressively prolonged latencies, preceding visual acuity decline, developed visual sequelae, while others with normal or normalizing latencies did not.
Impact:
- VEP P100 latency can serve as a valuable tool for evaluating visual function in BIH.
- Abnormal VEP latencies may predict the risk of visual impairment in BIH patients.
- Monitoring VEPs could aid in the management and prognosis of visual disturbances associated with BIH.