How Accurately Does the Diopsys Visual Evoked Potential (VEP) Vision Testing System Detect Glaucoma?

Evaluate sensitivity and specificity of NOVA-DN visually evoked potentials (VEP) protocol and new software method (Corda) for glaucoma detection using optical coherence tomography (OCT) images to differentiate between normal subjects and glaucoma suspects.

The aim of this study was to evaluate the ability of NOVA-DN VEP protocol and Corda parameters to discriminate between healthy eyes and eyes with early to moderate glaucomatous visual field loss. We will evaluate measurements of the NOVA-DN VEP protocol, Corda software and Cirrus spectral domain (SD) OCT software in order to compare and correlate. Hypotheses is that NOVA-DN VEP protocol and Corda analysis results in a high sensitivity, specificity and area under the Receiver Operating Characteristic (ROC) curves (ROC area) for glaucoma detection. Second hypothesis is NOVA-DN VEP protocol and Corda parameters can differentiate between normal and glaucoma suspects.