[Predictive value of the pattern-electroretinogram in glaucoma]

Area of Science:

• Ophthalmology
• Neuroscience

Context:

• Glaucoma is a leading cause of irreversible blindness.
• Early detection and monitoring of glaucoma progression are crucial for preserving vision.
• Glaucoma suspects require reliable methods to predict future visual field damage.

Purpose:

• To evaluate the efficacy of pattern-electroretinogram (PERG) in predicting the development of glaucomatous visual field (VF) losses in glaucoma suspects.
• To assess the diagnostic and predictive capabilities of PERG components (P50, N95, NP) in identifying eyes at risk of VF deterioration.

Summary:

• A study of 151 eyes from 78 glaucoma suspects with initially normal visual fields found that 43% had abnormal PERG results.
• Of those with abnormal PERG, 69% subsequently developed pathological visual fields over a mean 30-month follow-up.
• The N95 amplitude of the PERG demonstrated strong predictive value, particularly in high-risk groups.

Impact:

• Pattern-electroretinogram (PERG) serves as a valuable tool for discriminating glaucoma suspects likely to experience visual field loss.
• This electrophysiological test can aid clinicians in risk stratification and timely intervention for glaucoma management.
• The findings support the use of PERG, especially the N95 component, in monitoring eyes at risk for glaucoma progression.