Relationship between pattern electroretinogram, standard automated perimetry, and optic nerve structural assessments.

Area of Science:

• Ophthalmology
• Neuroscience
• Medical Imaging

Background:

• Glaucoma is a leading cause of irreversible blindness.
• Early detection of glaucoma relies on assessing retinal ganglion cell function and structural changes.
• Pattern electroretinogram optimized for glaucoma screening (PERGLA) offers a functional measure of retinal ganglion cell health.

Purpose of the Study:

• To evaluate the relationship between PERGLA-measured retinal ganglion cell function and established glaucoma diagnostic parameters.
• To correlate PERGLA findings with retinal nerve fiber layer (RNFL) thickness and optic nerve head topography.

Main Methods:

• A cohort of normal, glaucoma, and glaucoma suspect participants was enrolled.
• PERGLA, standard automated perimetry (SAP), scanning laser polarimetry (GDxECC), optical coherence tomography, and Heidelberg retina tomography (HRT) were performed.
• PERGLA amplitude was analyzed and correlated with functional (SAP) and structural (RNFL, HRT) measurements.

Main Results:

• PERGLA amplitude was significantly lower in glaucomatous eyes compared to normal eyes.
• PERGLA amplitude showed significant inverse correlation with age.
• PERGLA demonstrated modest correlations with central SAP sensitivity, superior RNFL thickness, and HRT optic nerve head parameters.

Conclusions:

• PERGLA effectively measures reduced retinal ganglion cell function in glaucoma.
• PERGLA shows promising correlations with key functional and structural glaucoma indicators.
• PERGLA may serve as a valuable tool in glaucoma screening and diagnosis.