A Complete Suite of Visual Functions Tests

The Premier Manufacturer of Electrophysiology Systems


We design all our hardware and software in-house to our and our customers’ exact specifications.



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 longstanding relationships within the electrophysiology community allow us to cross the bridge from academic labs into patient clinics, enabling easier collaboration between institutions.


Supporting Researchers and Clinicians Worldwide

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Our News

Retinal Gene Therapy Once Again Utilizes FST Testing

DiagnosysFST continues to be an important diagnostic tool to quantitatively evaluate the efficacy of breakthrough gene therapies for inherited retinal... Read More

ERG for Children

Discover the abridged ERG for children Full-field ERG is a pivotal diagnostic tool for detecting generalized retinal dysfunction and identifying... Read More

E3 System on the International Space Station

Diagnosys E3 Ophthalmic Electrophysiology System Begins its use on the International Space Station Research on changes to the eye and... Read More

The Full-field Sensitivity Threshold (FST) for Ophthalmic Diagnosis

What is the FST? The FST is a psychophysical test with distinct advantages over other tests for quantifying vision in... Read More