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Erin Lessner, Rebecca Lessner, Scott Davis, Sean Wadley, James Webster, Jennifer Hung; Comparison of the Accuracy of IOLMaster and Lenstar Post-Operative Refractive Outcomes Following Cataract Extraction with Posterior Chamber Intraocular Lens Implantation. Invest. Ophthalmol. Vis. Sci. 2014;55(13):2556.
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To determine the more accurate post-operative refraction by comparing IOLMaster and Lenstar predicted outcomes one-month after cataract extraction with phacoemulsification and posterior chamber intraocular lens implantation.
Fourteen patients had IOL calculations conducted with the IOLMaster and Lenstar prior to their cataract extraction with phacoemulsification and posterior chamber intraocular lens implantation. The same surgeon performed each operation. IOLMaster and Lenstar measurements were made without patients' refractive error. Each patient's spherical equivalent refractive error at the one-month post-operative visit was calculated. The post-operative refractions were compared to both the IOL Master and Lenstar predicted outcomes to determine the more accurate method for selecting an intraocular lens power.
The Lenstar had the more accurate post-operative refractive outcome in 57% of patients. The range of differences between patients’ post-operative spherical equivalent refractive error and the IOLMaster and Lenstar outcomes were 0.2-1.29 D and 0.005-1.1 D respectively. The mean of the differences for the IOLMaster was 0.132 D and 0.182 D for the Lenstar. A T-test was performed with p-value=0.4 showing no statistical significance between the IOLMaster and Lenstar.
Overall, the Lenstar predicted the most accurate post-operative refractions in 57% of cases. However, the difference between the IOLMaster and Lenstar was not found to be statistically significant. From this study, both IOLMaster and Lenstar are both acceptable methods to select an intraocular lens power. Studies with larger sample sizes should be conducted to further analyze the accuracy of the Lenstar to the IOLMaster.
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