New CooperVision-supported research, debuting this week at the 2025 American Academy of Optometry annual meeting (Academy 2025) in Boston, will highlight the benefits of a dual axis orthokeratology (ortho-k) contact lens design, those with low toricity. The study is part of the company’s broader presence at Academy, underscoring its leadership in advancing myopia management through innovative science and clinical collaboration.
The poster, Benefits of a Dual Axis Orthokeratology Contact Lens to Optimize Fit in Eyes with Low Corneal Toricity (Voltz K, et al.), evaluated the Paragon CRT Dual Axis lens. Unlike traditional single-axis ortho-k lenses, the design incorporates modifiable return and landing zones to better align with both the mid-peripheral and peripheral cornea.
Enhanced First-Fit Success for Low Toricity Patients
“Much of the conversation around ortho-k lens design focuses on patients with higher levels of corneal astigmatism,” said Kelly Voltz, OD, FAAO, FSLS, CooperVision Senior Manager, Myopia Management, and the study’s lead. “These findings demonstrate that advanced fitting options can also benefit children and adults with low toricity. Enhancing first-fit success builds confidence for eye care professionals, reduces chair time, and supports better outcomes for patients.”
In a multi-center study, eyes with low peripheral corneal elevation that did not achieve an acceptable fit with a standard ortho-k lens were successfully fit with the dual axis design. The lens improved centration, movement, and overall alignment with the corneal surface, underscoring its value in expanding first-fit success.
The research was conducted in collaboration with the Centre for Ocular Research & Education (CORE) at the University of Waterloo, Eyes on Sheppard in North York, Vaughan Vision Centre in Concord, and Byer’s Eye Institute at Stanford University, and was supported by CooperVision.
The poster will be presented on October 9, 2025, at 4:30 PM in the exhibit hall. A full schedule of events and presentations for Academy 2025, taking place October 8–11 in Boston, is available at https://aaopt.org/meetings/academy-2025-boston.