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LKC Technologies Menu English English Español Português 日本 Products For Humans RETeval UTAS mf/PERG Sensor Strips For Animals RETevet Request Demo Order Supplies Applications Visual Electrophysiology Electroretinography (ERG) Visual Evoked Potential (VEP) Clinical Conditions Diabetic Retinopathy Glaucoma Retinal Ischemic Diseases Inherited Retinal Disorders Miscellaneous Animal Applications Resources Case Studies eBooks & Reports Webinars Articles Research Podcasts Blog Videos Software About LKC Vision & Mission Team Clinical Advisors Testimonials History Contact Academy Buy Sensor Strips Schedule a Demo Electroretinography and Visual Evoked Potential Go Beyond Structure Measure Function

Achieve superior patient outcomes and power your research with ERG/VEP testing for an objective, more complete understanding of retinal function.

Ophthalmic Veterinarian  

Why Run ERG or VEP Tests? ERG testing (electroretinography) and VEP testing (visual evoked potential) solutions play a vital role in obtaining diagnostic information in both humans and animals, aiding clinicians and researchers with comprehensive data on how the retina and visual pathways are functionally operating.

DIAGNOSE Efficient and effective ERG / VEP testing provides an objective aid in detecting and confirming the presence of inherited or acquired eye disease.

MONITOR Track disease progression and/or predict treatment needs and outcomes.

RESEARCH Expand your understanding of retinal function and assess the factors impacting retinal processes and visual pathways with accurate and repeatable results.

Our ERG/VEP Devices  

RETeval® The only FDA-cleared, portable, battery-powered, non-mydriatic ERG/VEP Testing Device. ISCEV-compliant. Remarkably straightforward to use.

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RETevet™ For both veterinary ophthalmologists and researchers, measure an animal’s retinal function with a view of the eye in real-time.

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UTAS™ mf/PERG Compact and comprehensive testing for multifocal and pattern ERG and VEP assessments. Intuitive interface and fully ISCEV-compliant.

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ERG Named in Preferred Practice Pattern Guidelines for Diabetic Retinopathy

The American Academy of Ophthalmology’s inclusion of ERG demonstrates its valuable role in both diagnosing and managing diabetic retinopathy. This decision reflects the growing recognition that objective, functional testing, alongside structural imaging, is critical for a comprehensive DR assessment.

See why clinicians are calling this a pivotal moment in eye care history >

“We have been very pleased with the RETeval. It has changed the way that we practice and has allowed us to significantly decrease the amount of EUAs with ERGs we perform. Furthermore, it has resulted in earlier diagnosis of patients with inherited retinal degenerations.”

Melanie Schmitt, MD University of Wisconsin, School of Medicine and Public Health Practical Implementation of ERG into a Comprehensive Practice Chris Wolfe & EyeCode Education With this course by Chris Wolfe, OD, FAAO, Dip. ABO, available from Practice Performance Partners, you’ll know exactly when and how to use ERG to improve patient care and protect your practice. We’re giving away coupon codes so you can take the course for FREE!

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Webinars These webinars offer tips and comprehensive information on why electrophysiology and LKC’s systems and devices are the perfect solution for you.

All webinars >

The Blueprint for Functional Assessments Watch webinar How can ERG predict vision loss in a busy retina practice? Watch webinar New to Functional Testing? Here are the ABCs of ERG. Watch webinar RETeval: Core Cases from the Clinical Compendium With the incorporation of a single simple test, these eyecare providers are elevating their patient care through easier management decisions and better patient education.

With each of the 4 cases presented in this eBook, learn:

Why was an ERG performed? What were the ERG findings? How did the ERG impact next steps?

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“RETeval really has made me a better diagnostician. It has allowed me to get early information about a patient’s eye health before disease becomes clinically visible.”

Julie Rodman, OD, MS, FAAO Professor, Nova Southeastern University About LKC LKC Technologies® is a 35-year veteran of visual electrophysiology (ERG). The RETeval ERG is the only handheld, FDA-cleared device for ERG testing on dilated and un-dilated patients. It was designed to streamline clinic operations and simplify testing for staff and patients alike. It is supported by more than 250 peer-reviewed publications and is used in optometry, ophthalmology, and research settings.

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Latest Articles Case Study: Electroretinography in Diabetic Retinopathy Optometric Management, May 2025

Think your patient’s vision is fine because their HbA1c is controlled? Think again. This patient was sure his GLP-1 fixed everything – until ERG results told a very different story.

Read now The Chris Wolfe Podcast: Exploring ERG Technology in Eyecare EyeCode Media, April 2025

Drs. Chris Wolfe and Bradley Grant discuss their experiences with ERG technology, telehealth, and the evolving landscape of ocular disease management.

Listen now Routine electroretinography use supports patient management Optometry Times, February 2025

The integration of routine electroretinography (ERG) in clinical practice enhances patient management by providing objective, actionable data for diagnosing.

Read now Latest Research Could a hand-held, visual electrophysiology device theoretically reduce diagnostic waiting times for complex eye conditions in the NHS? March 28, 2025 Bayer S, Garillo D, Penn M, et al. A Discrete Event Simulation (DES) modelling study. Published online March, 28, 2025.

Learn More Coats like vitreoretinopathy in retinitis pigmentosa – Multimodal imaging and management March 1, 2025 Kapoor R, Parameswarappa DC, Jalali S. Published online March 2025.

Learn More Measuring differences in the ERG in myopia using the RETeval device with skin electrodes February 13, 2025 Stapley V, Anderson RS, Saunders K, Mulholland PJ. Ophthalmic Physiol Opt. Published online February 13, 2025.

Learn More More about the RETeval ERG/VEP device

Popular Topics: Make a Difference in Diabetic Retinopathy Care | Glaucoma Evaluation with RETeval PhNR Test | RETeval Device Reference Data | RETeval in Optometry​

Case Studies: ERG Demonstrates Stable Function Despite Severe Structural Damage | ERG Supports Treatment Decision in Diabetic Retinopathy | Photopic Negative Response as a Reliable Method for Glaucoma Follow-up in Children | A Tale of Two Patients | Vision Complaints Reflected on ERG | Predictive Value of Combining Diagnostic Technologies| ERG Provides Clarity When Fields and OCT Are Inconclusive| ERG Raises Red Flag, Changing Management Trajectory | ERG Provides Confidence to Monitor or Treat | ERG to Determine Ischemic Status | ERG to Replace FA for CRVO Treatment Decision | Using ERG to Monitor Glaucoma | Routine ERG Use Supports Complex Patient Management | ERG Alters Follow-up Schedule and Education for Patient with Diabetes | Using ERG for Management of Birdshot Chorioretinopathy | Using ERG to Monitor Glaucoma | Comprehensive Pediatric Assessment Using ERG in Challenging Cases | ERG Above and Beyond Retinal Imaging | ERG’s Role in Diabetic Retinopathy Progression Monitoring | ERG-based Risk Assessment in CRVO |ERG Supports Diagnostic Accuracy in a Pediatric Patient​

Ebooks: Core Cases from the Clinical Compendium | Modern Fundamentals of Diabetic Retinopathy Management in Optometry​ | Elevating Patient Care with ERG

Articles: Electroretinography Added to AAO’s Diabetic Retinopathy Preferred Practice Pattern Guidelines | How Comfortable is the RETeval for Patients?|The Use of RETeval ERG/VEP in Pediatric Ophthalmology | How RETeval ERG Has Enhanced My Practice | The Use of RETeval ERG/VEP  in Pediatric Ophthalmology |  The Ultimate Guide to Diabetic Retinopathy in Primary Eyecare | What Type of Functional Testing Do You Prefer for Patients with Diabetes? | Major Milestone: RETeval Referenced in over 200 Publications | Collaboration to Elevate the Standard of Care for DR | Is ERG Needed if You Have Access to a Good Structural Imaging Device? | A Straightforward Approach to Managing and Supporting Patients with Diabetes | Simplify Grading and Risk Assessment in Diabetic Retinopathy | Simplify Daily Decision-Making with Modern ERG | Objective Functional Testing Needs in Diabetes and Glaucoma | Why Modern ERG is Re-Defining Diabetes Management | Diabetic Retinopathy Management Protocols for Optometry​

Videos: RETeval: More Information, Better Decisions | RETeval: Eliminating Confusion in Clinic | RETeval: Function to Rely On | RETeval Handheld ERG: Features & Benefits | RETeval: Enhancing Collaborative Care | Handheld ERG for Primary Eyecare | Advice for Optometric Colleagues about Handheld ERG | Making a Difference in Diabetic Retinopathy Care | Changing the Way We Think About Electrodiagnostics | ERG Testing Made Simple | VEP Testing Made Simple | ERG Waveform | Introduction to Visual Electrophysiology | A Superior DR Progression Risk Assessment with the RETeval Device | Improve Glaucoma Management with the RETeval Handheld ERG Device | Reshaping the Retinal Diagnostic Landscape | New Solutions for Infants with ROP | Using the RETeval in Myopia Research​

Webinars: ABCs of ERG | Ready for RETeval | ERG in Action | Blueprint for Functional Assessments | Predicting Vision Loss in a Busy Retina Practice | Objective, Functional Testing for Glaucoma? | Best Management Practices for Diabetic Retinopathy | How the RETeval Device Became a Daily Instrument in my Diagnostic Toolkit

 

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Products RETeval UTAS mf/PERG Sensor Strips RETevet Electrophysiology Tests Electroretinography (ERG) Full-Field ERG (ffERG) Pattern ERG (PERG) Multifocal ERG (mfERG) Visual Evoked Potential (VEP) Address20501 Seneca Meadows Parkway, Suite 305
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