Initial testing of the dual-mode AD-IOL was performed by Adrian Glasser, PhD, Lions Eye Institute for Transplant and Research, Tampa, FL. The IOL was placed on a motorized stretcher in a mechanical eye model. Wavefront recordings were obtained using ray-tracing aberrometry (iTrace, Tracey Technologies) at baseline and when the IOL was stretched 0.6 mm, 0.8 mm, and 1.0 mm.
The evaluation showed visible movement of the haptics and optic with greater movement in the center of the optic than in the periphery. There was no significant distortion of the wavefront map across the range of stretch investigated.
“This experiment successfully addressed potential concern that change in optic shape would significantly distort optical quality,” said Dr. Beer.
“In finite element analysis, it was also shown that most of the strain in the optic occurred at the outer edges rather than in the center that moves up and down,” he added. “This reflects our clever design that enables significant change in optic shape with the low amount of force produced by the zonules.”