Vision tests are part of ensuring you have optimal eye health. Sometimes, you may go for a vision test and still find that you continue to struggle with the same issues. There is a need to improve the accuracy of these tests. ERG and VEP testing take vision testing to the next level.
The Diopsys® NOVA™ ERG and VEP Vision Testing System is a technology from Diopsys Inc. It ensures that the ERG and VEP tests take place accurately and correctly.
Visual evoked potential refers to electrophysiological signals from the electroencephalographic activity of the visual cortex. There are several types of tests that technicians perform and record from the overlying scalp.
They include the flash stimulation VEP (fVEP) and the pattern stimulation VEP (pVEP), which evaluate the primary visual cortex and the functioning of the optic nerve. The primary visual cortex is the part of the brain responsible for analyzing visual information first.
However, the day-to-day performance of the primary visual cortex and the optic nerve depends on the retina. Hence the need for ERG.
Electroretinography (ERG) provides information on how all the cell types in the retina are functioning. It does this by measuring the standing potential of the eye from brief light stimulation.
There are various kinds of tests for ERG as there are for VEP. These include diffuse light and patterned light ERG. The first is the most common, and it involves the application of a brief light stimulus. It shines the light on the whole retinal surface.
Patterned light ERG involves the illumination of light on the central retinal surface. The technician modulates the light but keeps it at constant mean luminance, resulting in data that shows a pattern, hence the name.
The technology from Diopsys Inc. allows doctors to perform the ERG and VEP tests right in their practices. Hence, patients do not need to go elsewhere. It is an advance from the previous technology of visual electrophysiology instruments. These were cumbersome and expensive, yet the tests were difficult to conduct and interpret.
The Diopsys NOVA ERG and VEP Vision Testing System brings objective data to clinical practice. It improves the specificity and sensitiveness of diagnosing visual pathway disorders.
The technology from Diopsys Inc. has several benefits. They include:
You do not need a verbal response. Therefore, the results are more objective, functional, and accurate.
The reports have quantitative information that the doctor can easily interpret. It facilitates better patient management and treatment.
The technology facilitates the documentation of results and easy tracking of the patient’s response to treatment. Therefore, the doctor can know how to manage their patient.
Diopsys NOVA ERG and VEP Vision Testing System provide doctors with an easy-to-follow guide for the testing procedure. They can also customize the tests to accommodate the individual patient and their condition.
For more information on Diopsys NOVA ERG and VEP Vision Testing System, visit Primary Vision Care at our Newark, Lancaster, Mount Vernon, Wilmington, and Waynesville, Ohio offices. Call (740) 299-1155, (740) 654-9909, (740) 393-6010, (937) 382-4933, or (513) 897-2211 to schedule an appointment today.