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What is the potential of intraoperative aberrometry? An experience report of my first 100 cases

Poster Details

First Author: A.Cantagalli ITALY

Co Author(s):    G. Golfieri                    

Abstract Details


Comparison of intraoperative aberrometry measurements of aphakic and pseudophakic eyes with subjective postoperative refraction. It is investigated, if intraoperative aberrometry can reduce the bandwidth of postoperative refractive error and can predict postop. refraction with the desired accuracy of �Â�±0,5 dpt.


Private Hospital, GSD Villa Erbosa, Bologna, Italy


In this study, 100 eyes are measured intraoperative with the intraoperative aberrometer IOWA�Â�® (Eyesight & Vision GmbH, Germany): aphakic eyes for intraop. IOL power calculation and pseudophakic eyes to get the impact of all the postop. refractive error sources. The IOLMaster�Â�® calculates the preoperative IOL power on the basis of optical biometry with Haigis formula. This IOL is compared with the intraop. IOL power of IOWA�Â�® determined on the basis of intraop. aphakic refraction measurement with the same Haigis formula. The intraoperatively measured refraction is compared with the subjective postoperative refraction determined at least 6 weeks after surgery


100 eyes were measured: aphakic eyes for optimizing the IOL power calculation and pseudophakic eyes for refraction check. A criteria has been found that allows to select the best IOL power from the two offered values preop. IOL of IOLMaster�Â�® and intraop. IOL of IOWA�Â�®. When using the criteria the postoperative refractive error is reduced to �Â�± 0.9 dpt in 100 % of the cases. The intraoperative refraction check of pseudophakic eyes (including all postop. refraction error sources) achieves a prediction accuracy of �Â�± 0.6 dpt in 100 % of the cases using the IOL-specific correcting factors.


It shows that intraoperative aberrometry on aphakic and pseudophakic eyes is a helpful tool to improve refractive outcome in cataract surgery. We found a criteria to reduce the bandwidth of refractive error and a high correlation between the intraoperative measured refraction of pseudophakic eyes and the subjective follow up examination results. AddOn IOL or IOL exchange could minimize the refractive error.

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