[Abnormalities of pattern reversal evoked visual potential in patients with defined multiple sclerosis]

Area of Science:

• Neuroscience
• Ophthalmology
• Clinical Electrophysiology

Context:

• Multiple sclerosis (MS) is a demyelinating disease affecting the central nervous system.
• Visual pathway involvement is common in MS, impacting patient quality of life.
• Accurate assessment of visual pathway lesions is crucial for MS management.

Purpose:

• To evaluate the diagnostic utility of pattern reversal visual evoked potentials (VEPs) in patients with definite multiple sclerosis.
• To correlate VEP abnormalities with the severity of visual impairment in MS.
• To investigate the distribution of lesions within the visual pathway.

Summary:

• Pattern reversal VEPs using 14' and 28' checks were assessed in 28 MS patients.
• Abnormal VEP responses were detected in 96.4% of patients, including 80% of asymptomatic eyes.
• A correlation was found between VEP abnormality patterns and visual involvement severity, indicating preferential affection of central vision afferents.

Impact:

• This study highlights the high sensitivity of VEPs in detecting subclinical and clinical visual pathway lesions in MS.
• The findings support VEPs as a valuable tool for assessing visual pathway integrity and disease progression in MS.
• Understanding lesion distribution aids in targeted therapeutic strategies for visual dysfunction in MS.