{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,14]],"date-time":"2026-08-14T16:42:10Z","timestamp":1786725730651,"version":"build-2736575974"},"reference-count":21,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"8","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,8]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>To evaluate the prediction accuracy of various intraocular lens (IOL) power calculation formulas on American Society of Cataract and Refractive Surgery (ASCRS) calculator and Barrett True-K total keratometry (TK) in eyes with previous laser refractive surgery for myopia.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>This retrospective study included eyes with history of myopic laser refractive surgery, which have undergone clear or cataractous lens extraction by phacoemulsification followed by IOL implantation. Those who underwent uneventful crystalline lens extraction were included. Eyes with any complication of refractive surgery or those with eventful lens extraction procedure and those who were lost to follow-up were excluded. Formulas compared were Wang\u2013Koch\u2013Maloney, Shammas, Haigis-L, Barrett True-K no-history formula, ASCRS average power, ASCRS maximum power on the ASCRS post-refractive calculator and the IOLMaster 700 Barrett True-K TK. Prediction error was calculated as the difference between the implanted IOL power and the predicted power by various formulae available on ASCRS online calculator.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      Forty post-myopic laser-refractive surgery eyes of 26 patients were included. Friedman\u2019s test revealed that Shammas formula, Barrett True-K, and ASCRS maximum power were significantly different from all other formulas (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.00001 for each). Median absolute error (MedAE) was the least for Shammas and Barrett True-K TK formulas (0.28 [0.14, 0.36] and 0.28 [0.21, 0.39], respectively) and the highest for Wang\u2013Koch\u2013Maloney (1.29 [0.97, 1.61]). Shammas formula had the least variance (0.14), while Wang\u2013Koch\u2013Maloney formula had the maximum variance (2.66).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>In post-myopic laser refractive surgery eyes, Shammas formula and Barrett True-K TK no-history formula on ASCRS calculator are more accurate in predicting IOL powers.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/ijo.ijo_2758_23","type":"journal-article","created":{"date-parts":[[2024,7,29]],"date-time":"2024-07-29T08:09:25Z","timestamp":1722240565000},"page":"1210-1213","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":3,"title":["Comparison of intraocular lens power prediction by American Society of Cataract and Refractive Surgery formulas and Barrett True-K TK in eyes with prior laser refractive surgery"],"prefix":"10.4103","volume":"72","author":[{"given":"Naren","family":"Shetty","sequence":"first","affiliation":[{"name":"Department of Cataract and Refractive Lens Services, Narayana Nethralaya, Bengaluru, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Priyanka","family":"Sathe","sequence":"additional","affiliation":[{"name":"Department of Cataract and Refractive Lens Services, Narayana Nethralaya, Bengaluru, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"family":"Aishwarya","sequence":"additional","affiliation":[{"name":"Department of Cataract and Refractive Lens Services, Narayana Nethralaya, Bengaluru, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mathew","family":"Francis","sequence":"additional","affiliation":[{"name":"Imaging, Biomechanics and Mathematical Modelling Solutions, Narayana Nethralaya, Bengaluru, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rohit","family":"Shetty","sequence":"additional","affiliation":[{"name":"Department of Cataract and Refractive Lens Services, Narayana Nethralaya, Bengaluru, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2024,7,29]]},"reference":[{"key":"R1-20260507","doi-asserted-by":"crossref","first-page":"497","DOI":"10.3341\/kjo.2018.0008","article-title":"Comparison of intraocular lens power calculation methods following myopic laser refractive surgery: New options using a rotating scheimpflug camera","volume":"32","author":"Cho","year":"2018","journal-title":"Korean J Ophthalmol"},{"key":"R2-20260507","doi-asserted-by":"crossref","first-page":"1744","DOI":"10.1016\/j.jcrs.2009.04.045","article-title":"Refractive lens exchange with spherical diffractive intraocular lens implantation after hyperopic laser in situ 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