About Us 2

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Founded by inventors, Diagnosys remains privately owned, allowing us to continuously respond to the changing needs of our industry. We design all our hardware and software in-house to our and our customers’ exact specifications. Our skilled software development, engineering, and quality teams enable us to incorporate customer feedback into not only our existing platforms but also our future designs on an unprecedented level!




Our patented and trademarked platforms span the range from preclinical to clinical use, providing researchers and clinicians with products that have the broadest use and capability in the market. Our ColorDome has a trillion to one range and can change its luminance by 1% anywhere within that range! Our amplifier is the only 32-bit amplifier commercially available, which makes it superior in detection of signal through noise. Click here to see our list of patents and trademarks.


All our platforms provide the broadest stimulus range, highest test repeatability, most sensitive amplifiers, and most customizable software in the industry of visual electrophysiology!




For over 40 years, Diagnosys has supported researchers and clinicians from initial ideas all the way to novel treatment platforms. Our longstanding relationships within the electrophysiology community allow us to cross the bridge from academic labs into patient clinics, enabling easier collaboration between institutions. This network also allows for a rapid pipeline from cutting edge research to commercial availability whenever possible. Click here to see what you can be part of!



  • I have used Diagnosys electrophysiology systems for clinical testing and research for nearly fifteen years. The systems are reliable, easy to use and protocols readily modified to answer research questions. The few times I have had problems with the equipment, Diagnosys has quickly responded and fixed the problem.

    Ron Hansen

  • Diagnosys LLC not only provides high quality testing equipment, but also provides excellent customer support services. All employees are knowledgeable in the field of visual electrophysiology and are able to help with any questions or issues you may have.

    Julie Racine

  • As a clinical neurophysiologist in a busy pediatric clinic, I wholeheartedly believe that the equipment made available to us by Diagnosys LLC allows for the testing necessary to aid in clinical diagnostics and research. I have always felt that this family run company has been by my side each and every step of the way, despite being located in another country.

    Dr. Allison Dorfman

  • Celeris is the Luxury Vehicle of Electrophysiology! I love Celeris for the vision science field because it grants all investigators access to a wide variety of electrophysiological tests without requiring in depth expertise of the theory of electrophysiology. It's wonderfully simple and easy to operate.

    Barbara A. Mysona