"Comparing SD-tVEP and PERG Tests Between Patients With Glaucoma, Patients With High Eye Pressure and Normal Patients"

Short duration transient visual evoked potentials (VEPs) detect disruption of electrical signals at any point along the visual pathway, from the retinal ganglion cells (RGCs) to the primary visual cortex. As an objective measure of visual function, VEP may have advantage over traditional visual field tests, by reducing confounded factors such as age, fatigue, and mental status.

Pattern electroretinogram (PERG), an objective test, is used for evaluating early damage to retinal ganglion cells (RGC). In PERG, retinal response is recorded while patterns are viewed in the visual field on a computer monitor.