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History of LKC

Preserving sight through functional retinal assessments

Originally founded as LKC Systems in 1975 by Jerome Leight, Sigmund Krassowsky, and Frank Chen, the company known today as LKC Technologies has spent the past 35+ years demystifying visual electrophysiology, helping clinicians diagnose and manage eye disease.

Achievements & Milestones

  • Introduced the first automated flash protocol as well as the concept of near-patient signal digitization with the UTAS’s UBA amplifier. This was the industry’s first fiber optic coupled amplifier that conditioned and digitized the patient’s electrical response, producing clear signals by the safest possible means.
  • Patented timing methods among color LEDs to generate the most consistent white-light flashes, helping transition away from flash tube technology to the more reliable LED technology.
  • Invented the patented Sensor Strip electrode array, which adheres to the skin beneath the eye rather than touching the eye.
  • Implemented real-time pupil size compensation in flash stimuli to enable consistent results without the need to artificially dilate the pupil.
  • Garnered IP for combining data from multiple brightness flicker ERGs and pupillography to help assess retinopathy. 
  • Introduced the RETeval® device in 2013, the world’s first and only handheld, portable, battery-powered, non-invasive, fully ISCEV-compliant ERG device for use on dilated or non-dilated eyes.
  • Granted FDA clearance for the RETeval handheld ERG/VEP in 2015.
  • Installed more than 3,000 RETeval devices worldwide as of January 2024.
  • RETeval mentioned in more than 200 peer-reviewed publications. 

Who is LKC?

We Are LKC - LKC staff

Why we do what we do

At LKC, we aim to preserve vision by offering technology that makes functional retinal assessments accessible everywhere, for everyone.

Read Our Vision & Mission

WHO WE ARE

As a global organization, LKC’s committed representatives are driven to make a difference through innovative technology and quality customer service.

Meet Our Team
Learn more about our products​

ERG & VEP DEVICES

Explore products
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© 2025 LKC Technologies, Inc.

California Proposition 65 information

Prop-65Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Substance Tables:

The table below lists substances which may be contained within LKC’s RETeval and RETevet products. Substances listed as Type 1 are within permissible levels in one or more of LKC’s products. Substances listed as Type 2 are used in the production of some components used in LKC products and may be present at trace levels, but are typically destroyed during processing. 

RETeval and RETevet Devices

Substance CAS # Type Listed as causing:
Nickel 7440-02-0 1 Cancer
Acrylonitrile 107-13-1 2
Ethylbenzine 100-41-4 2
Crystaline Silica 14808-60-7 1
Lead 7439-92-1 1 Cancer Developmental Toxicity Male Reproductive Toxicity Female Reproductive Toxicity
Methylene Chloride 75-09-2 2 Cancer Female Reproductive Toxicity
Bisphenol A 80-05-7 2
N-Hexane  110-54-3 2 Male Reproductive Toxicity