Visual electrophysiology is an objective, non-invasive method of assessing function in various mechanisms of the entire visual pathway.
Designed for a broad range of applications ranging from glaucoma to mild traumatic brain injury, EvokeDx uses conventional as well as novel, proprietary stimuli to illicit responses from discrete sub-divisions of neural visual pathways.
 EvokeDx is not cleared for specific diagnosis of these conditions.
EvokeDx NextGen icVEP | VEP | ERG
EvokeDx® is the next generation icVEP + VEP + ERG device developed by Konan Medical and leading scientists in visual electrophysiology. It’s compact, all-in-one form factor features numerous market-leading technologies including: intuitive touch-screen user interface, Organic LED stimulus display, infrared gaze and attention monitoring, dual-channel amplifier, and powerful Fourier (Frequency domain) analytics with intuitive reporting. EvokeDx is a fresh approach to visual electrophysiology.
EvokeDx Clinical Benefits
Visual Evoked Potentials (VEP) provide objective, quantitative information about the functional integrity of discrete visual pathways in a non-invasive manner. This is new information that is complementary to the structural analysis obtained from technologies such as OCT and Fundus photography, and augments subjective information from standard visual acuity and perimetry. Electroretinograms (ERG) reflect the integrity of the optics, photoreceptors, bipolar cells and retinal ganglion cells. Clinically, ERGs may be useful when patients have abnormal VEPs to differentiate between retinal dysfunction occurring in the optic nerve, optic radiations and occipital cortex.
The Operator side of EvokeDx features an intuitive, touch-screen enabled user experience graphically guiding the operator easily through the test sequence:
- patient add | select
- test select
- patient alignment
- results / analytics
- preferences / settings
Analytics instantly displays test results and Fourier analytics. One-touch help screens provide context-sensitive explanations of all analytic components for all tests. A robust comparison feature allows instant comparisons. For example:
- compare right and left eyes on same day
- compare same eye from a prior exam to assess progression
- compare how a bright response compares to dark response, same pattern
- compare how a small check response compares to large check response
- compare how one patient compares to another patient of known characteristics
The optional Viewer application allows physicians to (via 256 bit encryption) securely access the EvokeDx database across the network to review and manipulate the Fourier analytics. Dig deep into the patient results, which can also be printed or saved as PDF documents.
Patented icVEP Tests
Konan’s patented Isolated Check VEP (icVEP™) is a low-contrast, high temporal frequency, sinusoidally modulated stimulus thought to target the magnocellular pathway.
Very Short Run Testing
Test Library - 16 strategies
Low-cost, Non-Proprietary Electrodes
EvokeDx electrode leads feature standard snap connectors to allow the utilization of high quality, non-proprietary EEG electrodes that cost significantly less than the proprietary electrodes offered by other vendors.
Contact Konan Medical for a review of how substantial this cost savings really is in your practice.
SBIR Glaucoma investigation, reported 94% and 92% accuracy respectively in separating glaucomatous from non-glaucoma patients using the patented icVEP protocol. Independent assessments in June 2013 at two sites in Beijing (TongRen and YouYi) report equivalent findings using icVEP.
Integrated Gaze Monitor
Remote Training and Support
No "IRQ" Synchronization
Our scientists have incorporated a low-latency technique to synchronize data collection as opposed to video-card based “IRQ” methods. Synchronous data is designed to avoid errors from side-lobe leakage. Automated artifact rejection also simplifies high-quality data collection.