Clinical Tools

Toric Results Analyzer

The Toric Results Analyzer was developed by John Berdahl, MD and David Hardten, MD and can determine if rotating the Toric IOL would decrease residual astigmatism. The Toric Results Analyzer can help determine the amount of IOL rotation, and the...

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Barrett Rx Formula

The Barrett Rx Formula uses both the Barrett Universal II formula and the Barrett Toric Calculator to perform its analysis. It provides anterior segment surgeons with information that identifies how much to rotate the toric IOL in a patient with...

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Hill-RBF Calculator

The Hill-RBF (Radial Basis Function) Calculator is the joint project of the RBF Calculator Physician Team, Haag-Streit Switzerland, and Mathworks. Access Details Access the Hill-RBF Calculator through the website: https://rbfcalculator.com/online/index.html

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Barrett Universal II Formula

The Barrett Universal II Formula is based on Gaussian principles and takes into account the change in principal planes that occur with different intraocular lens powers. The Barrett Universal II forms the foundation for the Barrett Toric calculator. Access Details...

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ASCRS Post-Refractive IOL Calculators

IOL power calculation in eyes that have undergone LASIK/PRK/RK. This website provide three calculator tools. IOL Caolculator for Eyes with Prior Myopic LASIK/PRK IOL Calculator for Eye with Prior Hyperopic LASIK/PRK IOL Calculator for Eyes with Prior RK Access Details...

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