<?xml version='1.0' encoding='UTF-8'?><codeBook xmlns="ddi:codebook:2_5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="ddi:codebook:2_5 https://ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd" version="2.5"><docDscr><citation><titlStmt><titl>Dataset generated for Gjerdrum et al. Refractive precision of ray tracing IOL calculations based on OCT data versus traditional IOL calculation formulas based on reflectometry in patients with a history of laser vision correction for myopia</titl><IDNo agency="DOI">doi:10.23642/USN.13633307</IDNo></titlStmt><distStmt><distrbtr source="archive">DataverseNO</distrbtr><distDate>2021-03-01</distDate></distStmt><verStmt source="archive"><version date="2021-03-01" type="RELEASED">1</version></verStmt><biblCit>Gjerdrum Bjørn; Gundersen Kjell Gunnar; Lundmark Per Olof; Aakre Bente Monica, 2021, "Dataset generated for Gjerdrum et al. Refractive precision of ray tracing IOL calculations based on OCT data versus traditional IOL calculation formulas based on reflectometry in patients with a history of laser vision correction for myopia", https://doi.org/10.23642/USN.13633307, DataverseNO, V1</biblCit></citation></docDscr><stdyDscr><citation><titlStmt><titl>Dataset generated for Gjerdrum et al. Refractive precision of ray tracing IOL calculations based on OCT data versus traditional IOL calculation formulas based on reflectometry in patients with a history of laser vision correction for myopia</titl><IDNo agency="DOI">doi:10.23642/USN.13633307</IDNo></titlStmt><rspStmt><AuthEnty affiliation="University of South-Eastern Norway">Gjerdrum Bjørn</AuthEnty><AuthEnty affiliation="University of South-Eastern Norway">Gundersen Kjell Gunnar</AuthEnty><AuthEnty affiliation="University of South-Eastern Norway">Lundmark Per Olof</AuthEnty><AuthEnty affiliation="University of South-Eastern Norway">Aakre Bente Monica</AuthEnty></rspStmt><prodStmt><producer abbr="USN">University of South-Eastern Norway</producer></prodStmt><distStmt><distrbtr source="archive">DataverseNO</distrbtr><distrbtr abbr="USN" URI="https://www.usn.no/english/">University of South-Eastern Norway</distrbtr><contact affiliation="University of South-Eastern Norway" email="dataverseno@usn.no">USN Research Data Support</contact><depositr>University of South-Eastern Norway</depositr><depDate>2021-03-01</depDate></distStmt><holdings URI="https://doi.org/10.23642/USN.13633307"/></citation><stdyInfo><subject><keyword xml:lang="en">Other</keyword><keyword>post-LVC</keyword><keyword>OCT</keyword><keyword>ray tracing</keyword><keyword>IOL calculation</keyword><keyword>biometry</keyword><keyword>individual calculation</keyword><keyword>prediction error</keyword><keyword>Ophthalmology and Optometry not elsewhere classified</keyword></subject><abstract>DATASET MIGRATED FROM FIGSHARE: &lt;p>&lt;b>Purpose:&lt;/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)&lt;/p>&lt;b>Patient and methods:&lt;/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 &lt;a>low coherence reflectometry &lt;/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 &lt;a>True-K no-history&lt;/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 &lt;a>(Ref. no 2019/768).&lt;/a>A written informed consent was obtained</abstract><sumDscr/></stdyInfo><method><dataColl><sources/></dataColl><anlyInfo/></method><dataAccs><setAvail/><useStmt/><notes type="DVN:TOU" level="dv">&lt;a href="http://creativecommons.org/licenses/by-nc/4.0">CC BY-NC 4.0&lt;/a></notes></dataAccs><othrStdyMat><relPubl><citation><titlStmt><titl>Refractive precision of ray tracing IOL calculations based on OCT data versus traditional IOL calculation formulas based on reflectometry in patients with a history of laser vision correction for myopia</titl><IDNo agency="doi">10.2147/OPTH.S298007</IDNo></titlStmt><biblCit>Refractive precision of ray tracing IOL calculations based on OCT data versus traditional IOL calculation formulas based on reflectometry in patients with a history of laser vision correction for myopia</biblCit></citation><ExtLink URI="https://doi.org/10.2147/OPTH.S298007"/></relPubl></othrStdyMat></stdyDscr><otherMat ID="f265754" URI="https://dataverse.no/api/access/datafile/265754" level="datafile"><labl>README_RPE_RayTracing_IOLcalc_.rtf</labl><txt>README_RPE_RayTracing_IOLcalc_.rtf</txt><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">application/rtf</notes></otherMat><otherMat ID="f265755" URI="https://dataverse.no/api/access/datafile/265755" level="datafile"><labl>RPE_RayTracing_IOLcalc.csv</labl><txt>RPE_RayTracing_IOLcalc.csv</txt><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">text/csv</notes></otherMat></codeBook>