Purpose: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)
Patient and methods: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 low coherence reflectometry (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 True-K no-history, 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 (Ref. no 2019/768).A written informed consent was obtained"},"subject":"Other","citation:keyword":[{"citation:keywordValue":"post-LVC"},{"citation:keywordValue":"OCT"},{"citation:keywordValue":"ray tracing"},{"citation:keywordValue":"IOL calculation"},{"citation:keywordValue":"biometry"},{"citation:keywordValue":"individual calculation"},{"citation:keywordValue":"prediction error"},{"citation:keywordValue":"Ophthalmology and Optometry not elsewhere classified"}],"publication":{"publicationRelationType":"IsSupplementTo","publicationCitation":"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","publicationIDType":"doi","publicationIDNumber":"10.2147/OPTH.S298007","publicationURL":"https://doi.org/10.2147/OPTH.S298007"},"citation:producer":{"citation:producerName":"University of South-Eastern Norway","citation:producerAbbreviation":"USN","citation:producerURL":"https://www.usn.no/english/"},"grantNumber":{"citation:grantNumberAgency":"Optimization of refractive accuracy in patients who have previously undergone laser correction of their myopia"},"citation:distributor":{"citation:distributorName":"University of South-Eastern Norway","citation:distributorAbbreviation":"USN","citation:distributorURL":"https://www.usn.no/english/"},"citation:depositor":"University of South-Eastern Norway","dateOfDeposit":"2021-03-01","@id":"https://doi.org/10.23642/USN.13633307","@type":["ore:Aggregation","schema:Dataset"],"schema:version":"1.0","schema:name":"Dataset generated for Gjerdrum et al. 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