Update on Intraocular Lens Calculation Formulas

Achievement of a target refractive outcome has become an integral part of cataract surgery. Fortunately, the advent of optical biometry and introduction of newer-generation intraocular lens (IOL) calculation formulas has improved our ability to accurately predict cataract surgery refractive outcomes, as we showed in a study published in Ophthalmology last year. 1 Melles R.B. Holladay J.T. Chang W.J. Accuracy of intraocular lens calculation formulas. Ophthalmology. 2018; 125: 169-178 Abstract Full Text Full Text PDF PubMed Scopus (281) Google Scholar Since that report, several new or updated formulas have become available. We evaluated the latest formulas using the same dataset to determine whether they offer the potential for even more accurate prediction of refractive outcomes. The study was performed under a Kaiser Permanente Institutional Review Board approval, which did not require individual informed consent. This study adhered to the tenets of Declaration of Helsinki.