[Correlation between quantitative nerve fiber layer thickness and mean defect of visual field in primary open angle...

Area of Science:

• Ophthalmology
• Neuroscience
• Medical Imaging

Context:

• Primary open-angle glaucoma (POAG) is a leading cause of irreversible blindness.
• Early detection and monitoring of glaucoma progression are crucial for preserving vision.
• Assessing structural damage to the retinal nerve fiber layer (RNFL) can indicate functional visual field deficits.

Purpose:

• To determine if GDx imaging parameters correlate with functional visual field damage in POAG patients.
• To investigate the relationship between RNFL thickness measurements and the mean defect (MD) of the visual field.

Summary:

• GDx measurements of RNFL parameters (e.g., SA, TSNIT, IA, NFI) showed significant negative correlations with the mean defect of the visual field.
• Both global and regional RNFL parameters decreased as visual field MD worsened.
• Specific RNFL thinning in one hemisphere correlated with visual field defects in the corresponding contralateral visual field.

Impact:

• GDx provides quantitative RNFL measures that reflect functional visual field loss in glaucoma.
• These findings support the use of GDx for monitoring glaucoma progression and patient follow-up.
• GDx can aid clinicians in assessing disease severity and treatment efficacy.