The eye is the window into the body. Tesseract is building a portable, affordable device for monitoring and preventing disease. Tesseract Health is part of the 4Catalyzer accelerator, with over $700 Million in funding, 300 scientists and engineers. Our offices are in Guilford CT, New York City, and Palo Alto. 4Catalyzer is founded by Jonathan Rothberg, the inventor of “Next-Gen†DNA sequencing and ultrasound-on-a-chip (Butterfly Network).