IOL data from all over the world collected by leading cataract surgeons is the foundation for the Hill-RBF. This big data is analyzed by pattern recognition based on artificial intelligence leading to highly accurate IOL predictions and providing confidence thanks to a unique reliability check. Hill-RBF is the only IOL power calculation method providing you with an out-of-bound message: a confidence marker, when it comes to an IOL power collection of an extreme case, i.e., extremely long or short eye.

Standard formulae use axial length and K measurements to calculate IOL power, limiting their performance with unusual eyes. Barrett and Olsen use more parameters, including anterior chamber depth and lens thickness to estimate implant power. This improves the prediction of the implant position and enables better results, independent of the patient anatomy.

Unlike most standard formulae, the Universal II formula is a thick lens formula, taking into account the changes in optics design of IOLs at different powers. In addition to AL and Ks, it uses ACD, lens thickness and white-to-white measurement to predict the lens position and IOL power, leading to excellent refractive outcomes in all patients. 

The Olsen formula uses ray tracing, a method well known from optics design, to calculate lens power and the concept of the C-constant to predict implant location. As an input parameter, apart from AL and Ks, Olsen uses ACD and LT measurement enabling excellent implant position prediction in all eyes.

IOL power calculation in patients with prior RK, LASIK or PRK, presenting with no history, is easily achieved with the integrated Barrett True-K and Shammas No-History method. If the change in refraction caused by the refractive procedure is known, then the Barrett True-K with history, Masket and modified Masket formulae may also be used.

The EyeSuite IOL Toric Planner provides the user with an intuitive tool to plan the toric intervention on high-resolution eye images. Using the incision optimization tool enables the surgeon to put the incision in the exact right location to achieve the minimum anticipated residual astigmatism, with the lowest toric power IOL implanted.