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ASCRS launches Hill-RBF calculator for IOL power calculation in cataract surgery
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The American Society of Cataract and Refractive Surgery has launched the Hill-RBF calculator, a device for calculating IOL power in cataract surgery, according to a press release from the organization.
The calculator features radial basis function IOL power selection that “performs best where it has the most data. By this method, short, normal and long eyes are simply viewed as a pattern,” the release said. The radial basis function IOL power selection also uses a validating boundary model, which indicates to the user when the calculator is performing within a defined area of accuracy; the calculator also gives an out-of-bounds statement if it is “naïve” to the measurements entered.
Warren E. Hill, MD, FACS
“This completely new approach has the ability to learn tasks based solely on data, independent of what is previously known. It was our objective to develop something better suited to the complex, nonlinear relationships of the various parts of the human eye,” Warren E. Hill, MD, FACS, project leader of the Hill-RBF calculator, said in the release.
The calculator has been optimized for biconvex IOLs from +6 D to +30 D and will be expanded to +40 D. This approach is an ongoing project and will be continuously updated, the release said.
The calculator is a collaboration among 24 surgeons in 13 countries, Haag-Streit and MathWorks. It has been used in the Haag-Streit Lenstar for all axial measurements and high-density autokeratometry.
“The fundamental premise of this project is to increase patient safety and physician confidence, and reduce the many burdens associated with a postoperative refractive surprise,” Hill said.