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Next Generation ERG Research

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From rodents to rabbits, Celeris provides researchers with a superior testing experience. With its patent pending integrated electrode stimulator, Celeris is a revolutionary pattern and flash ERG system that meets the highest standards of the industry.


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Electrophysiology Simplified

A High-throughput Solution to Rodent-based Research

The principle innovation of Celeris is the light pipe that combines an electrode and stimulator into one component. This pioneering design simplifies setup procedures, decreasing overall test time while maximizing throughput.

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Systems for any Animal Size



  • Mouse
  • Rat
  • Rabbit

Lab Cradle

  • Zebrafish
  • Rodent

E3 Combinations


  • Pig
  • Cat & Dog
  • Primate

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Protocols for Every Stage of the Visual Pathway



Inner and Outer Retinal Function



Voltage potential changes to light

optic nerve

Optic Nerve

Signal Propagation through Optic Nerve to Visual Cortex


  • 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