10.23642/USN.13633307 Gjerdrum Bjørn University of South-Eastern Norway Gundersen Kjell Gunnar Kjell sen Kjell Gunnar https://orcid.org/0000-0002-1003-0225 University of South-Eastern Norway Lundmark Per Olof Per mark Per Olof https://orcid.org/0000-0001-8293-6184 University of South-Eastern Norway Aakre Bente Monica Bente Bente Monica University of South-Eastern Norway DataverseNO 2021 Other post-LVC OCT ray tracing IOL calculation biometry individual calculation prediction error Ophthalmology and Optometry not elsewhere classified University of South-Eastern Norway University of South-Eastern Norway USN Research Data Support University of South-Eastern Norway 2021-03-01 2021-03-01 10.2147/OPTH.S298007 10.23642/USN.13633307/B7EK0N 10.23642/USN.13633307/KCH3NW 54919 6535 application/rtf text/csv 1.0 Creative Commons Attribution-NonCommercial 4.0 International License. DATASET MIGRATED FROM FIGSHARE: <p><b>Purpose:</b>To compare the refractive predictability of ray tracing IOL calculations based on OCT data versus traditional IOL calculation formulas based on reflectometry in patients with a history of previous myopic laser vision correction (LVC)</p><b>Patient and methods:</b>This was a prospective interventional single-arm study of IOL calculations for cataract and refractive lens exchange (RLE) patients with a history of myopic LVC.Preoperative biometric data was collected using an optical <a>low coherence reflectometry </a>(OLCR) device (Haag-Streit Lenstar 900) and two optical coherence tomography (OCT) devices (Tomey Casia SS-1000 and Heidelberg Engineering Anterion). Traditional post LVC formulas (Barret <a>True-K no-history</a>, Haigis-L and Shammas no-history) with reflectometry data, and ray tracing IOL calculation software (OKULIX, Panopsis GmbH, Mainz, Germany)) with OCT data were used to calculate IOL power. Follow-up examination was two to three months after surgery. The main outcome measure, refractive prediction error (RPE), was calculated as the achieved postoperative refraction minus the predicted refraction. The study followed the tenets of the Declaration of Helsinki and was approved by the Regional Committee for Medical and Health Research Ethics in Norway <a>(Ref. no 2019/768).</a>A written informed consent was obtained Optimization of refractive accuracy in patients who have previously undergone laser correction of their myopia