Cassini TCA achieves 94% within 0.5D in retrospective study presented by Elizabeth Yeu MD at ASCRS

Elizabeth Yeu, M.D. from Virginia Eye Consultants presents study results showing 94% within 0.5D residual refractive astigmatism with Cassini TCA at the ASCRS conference in New Orleans, LA


The Hague, Netherlands, May 10, 2016

The Hague Netherlands / Burlington MA, May 10, 2016 – At the scientific program of the American Society of Cataract and Refractive Surgery in New Orleans, Elizabeth Yeu, M.D. has presented a retrospective chart review of 50 consecutive patients comparing Cassini Total Corneal Astigmatism (TCA) to the Barrett calculator and the Baylor nomogram.

Cassini TCA achieved 94.0% accuracy within 0.50 D and 74.0% accuracy within 0.25 D postoperative manifest refractive cylinder, compared with 84.0% and 54.0%, respectively, for the Barrett toric calculator, and 79.4% and 50.0% for the Baylor nomogram.

Since the launch of Cassini Total Corneal Astigmatism (TCA) in 2015, many leading refractive cataract surgeons have demonstrated how the unique color LED ray tracing technology enables them to achieve better surgical outcomes. The study from Dr. Yeu confirms the key benefit of measuring the posterior cornea and the impact on astigmatism correction in cataract surgery.

About Cassini
Cassini pioneers smart and superior eye diagnosis solutions that are affordable, fast and user-friendly for care providers worldwide to serve their patients best.

Cassini Total Corneal Astigmatism helps cataract surgeons to better understand corneal properties in order to improve outcomes and increase premium patient volume. Cassini offers a full suite of examinations required for toric and multifocal IOL implantation. This includes corneal topography, mesopic and photopic pupillometry as well as full color photography for diagnostic purpose. The technology employs red, green and yellow LEDs that are each positioned in a unique relationship to four of its neighbors, giving each one a ’gps-like’ coordinate. Cassini uses the ray-tracing principle to measure the relative position of each point, using the three different colors as ‘triangulation’ points.


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Jeroen Cammeraat, CEO, +31 70 399 31 12