{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T05:29:13Z","timestamp":1786512553912,"version":"build-2736575974"},"reference-count":24,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T00:00:00Z","timestamp":1782172800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T00:00:00Z","timestamp":1782172800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Exper Ophthalmology"],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>To compare the predictive accuracy of ray tracing\u2010based intraocular lens (IOL) power calculation formulas with the Barrett Universal II (BUII) formula in eyes with Fuchs endothelial corneal dystrophy (FECD) undergoing combined cataract surgery and Descemet membrane endothelial keratoplasty (triple DMEK).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This is a retrospective, single\u2010centre comparative case series. Preoperative biometry was obtained using Scheimpflug tomography (Pentacam AXL) and a swept\u2010source optical coherence tomography\u2013based biometer (IOLMaster 700). IOL power calculations were performed using Barrett Universal II (BUII), Olsen ray\u2010tracing and two OKULIX ray\u2010tracing approaches (paraxial and 2.5\u2010mm pupil). Prediction error (PE) was calculated and trueness, precision, and accuracy were evaluated using robust statistical methods (Eyetemis). A retrospective IOLup1D adjustment was additionally assessed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      One hundred forty\u2010nine eyes of 149 patients were enrolled. BUII demonstrated the lowest trimmed mean absolute error (0.74\u2009\u00b1\u20090.65D) and median absolute error (0.60D), with 72% of eyes within \u00b11.00D of the target refraction. Olsen ray\u2010tracing showed higher errors (mean absolute error 1.06\u2009\u00b1\u20091.02D), while both OKULIX approaches performed similarly (0.91\u20130.92D). Only OKULIX paraxial ray\u2010tracing showed no significant systematic bias (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.450), whereas all other formulas demonstrated a significant hyperopic shift (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001). After retrospective IOLup1D adjustment, BUII and Olsen achieved comparable accuracy, with Olsen demonstrating the highest trueness. Mean keratometry values measured with the IOLMaster were 0.20\u2009\u00b1\u20090.63D steeper compared to the Pentacam.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>In triple DMEK eyes, ray tracing\u2013based IOL power calculation did not offer better accuracy compared to BUII. BUII demonstrated the highest accuracy and precision overall. After IOLup1D adjustment, BUII and Olsen achieved comparable accuracy, with Olsen showing the greatest trueness.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/ceo.70135","type":"journal-article","created":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T09:17:35Z","timestamp":1782206255000},"page":"769-778","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Ray\u2010Tracing\u2010Based Intraocular Lens Power Calculation in Combined Cataract Surgery and Descemet Membrane Endothelial Keratoplasty"],"prefix":"10.1111","volume":"54","author":[{"given":"Jan O.","family":"Weber","sequence":"first","affiliation":[{"name":"Department of Ophthalmology Goethe\u2010University  Frankfurt Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Klemens P.","family":"Kaiser","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Goethe\u2010University  Frankfurt Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jascha A.","family":"Wendelstein","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology University Hospital Munich, Ludwig\u2010Maximilian\u2010University  Munich Germany"},{"name":"Institute for Refractive and Ophthalmic Surgery (IROC)  Zurich Switzerland"},{"name":"Department of Experimental Ophthalmology Saarland University  Homburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H. Burkhard","family":"Dick","sequence":"additional","affiliation":[{"name":"Knappschaftskrankenhaus Eye Clinic, University Hospital of the Ruhr University Bochum  Bochum Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Kohnen","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Goethe\u2010University  Frankfurt Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ingo","family":"Schmack","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Goethe\u2010University  Frankfurt Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,6,23]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10792-021-01850-w"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1097\/ICO.0000000000002602"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00417-019-04566-x"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1177\/1120672118785282"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajo.2025.04.041"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2011.02.033"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ophtha.2009.04.035"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1097\/ICO.0000000000000842"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ophtha.2017.08.027"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12886-017-0547-7"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1097\/01.ico.0000248385.16896.34"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.18502\/jovr.v17i2.10788"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1038\/sj.eye.6702300"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ophtha.2020.07.005"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1097\/j.jcrs.0000000000001106"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1080\/02713683.2024.2305780"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajo.2015.05.029"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1097\/j.jcrs.0000000000001518"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.3928\/1081597X-20250707-07"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2014.09.042"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2018.04.040"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1097\/ICO.0000000000003100"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.1097\/j.jcrs.0000000000001212"},{"key":"e_1_2_9_25_1","doi-asserted-by":"publisher","DOI":"10.3928\/1081597X\u201020220601\u201002"}],"container-title":["Clinical &amp; Experimental Ophthalmology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/ceo.70135","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/ceo.70135","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/ceo.70135","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T04:55:15Z","timestamp":1786510515000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/ceo.70135"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6,23]]},"references-count":24,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2026,8]]}},"alternative-id":["10.1111\/ceo.70135"],"URL":"https:\/\/doi.org\/10.1111\/ceo.70135","archive":["Portico"],"relation":{},"ISSN":["1442-6404","1442-9071"],"issn-type":[{"value":"1442-6404","type":"print"},{"value":"1442-9071","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,6,23]]},"assertion":[{"value":"2026-03-27","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-06-03","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-06-23","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}