Discover our complete suite of visual function test systems

Preclinical

Celeris, our flagship preclinical system, revolutionizes rodent testing with dual function stimulator-electrodes. We also offer electroretinography (ERG) solutions for other small to large animals.

Learn more

Clinical

We offer four broad categories of visual function tests—visual electrophysiology, visual psychophysical, objective acuity, and pupillometry, providing a complete picture of a person’s visual function.

Learn more

Trial Services

Our trial services include study setup assistance, training, and data review. These trial services enable sites to gather consistent, quality data across multiple locations worldwide.

Learn more

Supporting researchers and clinicians worldwide for more than forty years

Bascom Palmer Eye Institute

Cleveland Clinic

Deep Blue Retina

Great Ormond Street Hospital

Hadassah University Hospital

Kellogg Eye Center

Mayo Clinic

Moorfields Eye Hospital

Nationwide Children’s

Peking University Hospital

Retina Consultants of Texas

Singapore National Eye Center

Sheikh Khalifa Medical City

Wilmer Eye Institute

Aravind Eye Care System

Alberta Health Services

Three reasons to partner with the premier manufacturer of visual electrophysiology systems

Expertise

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

Technology

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.

Network

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

About Us

Stay up to date with our latest news

Toward Diagnosing Parkinson’s Disease Using Visual Electrophysiology

August 5, 2025

Parkinson’s disease is a progressive neurodegenerative disease mainly seen in elderly individuals that causes neurons in parts of the brain to weaken, become damaged, and die. Neurodegenerative disease biomarkers are an active area of research,…
Read more
Five Essential Features of Modern Preclinical Visual Electrophysiology Test Equipment

June 11, 2025

Preclinical visual electrophysiology is a staple of ophthalmology research and is expanding within neurophysiological research. Experienced researchers and those new to the field may be interested in what modern test equipment can offer and which…
Read more
FST Continues to Gain Momentum at ARVO 2025

June 4, 2025

Featured Image: Diagnosys FST system at the Laboratory of Photobiology, Keio University School of Medicine. Image courtesy of Dr. Yusaku Katada, chief executive officer and co-founder of Restore Vision. At this year’s ARVO meeting, the full-field stimulus test…
Read more