{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T11:47:11Z","timestamp":1789645631387,"version":"4.0.0"},"reference-count":26,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2016,11,2]],"date-time":"2016-11-02T00:00:00Z","timestamp":1478044800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Ophthalmologica"],"published-print":{"date-parts":[[2017,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The aim of this study was to provide a comprehensive comparison of reliability of corneal topographic measurements in keratoconic eyes using swept\u2010source optical coherence tomography (<jats:styled-content style=\"fixed-case\">OCT<\/jats:styled-content>) and a combined Placido\u2013Scheimpflug imaging.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A total of 30 eyes of 30 patients were included. The mean age was 31.2\u00a0\u00b1\u00a08.4\u00a0years. Two consecutive topographic measurements were obtained for one eye of each patient using swept\u2010source <jats:styled-content style=\"fixed-case\">OCT<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">CASIA<\/jats:styled-content>) and combined Placido\u2013Scheimpflug imaging (<jats:styled-content style=\"fixed-case\">TMS<\/jats:styled-content>\u20105). Test\u2013retest reliability\u00a0of <jats:styled-content style=\"fixed-case\">CASIA<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">TMS<\/jats:styled-content>\u20105 measurements including central corneal thickness (<jats:styled-content style=\"fixed-case\">CCT<\/jats:styled-content>) and thinnest corneal thickness (<jats:styled-content style=\"fixed-case\">TCT<\/jats:styled-content>), keratometry at steep (Ks)\u00a0and\u00a0flat (Kf) axes, average keratometry (Avg K), cylinder, and, best\u2010fit spheres (<jats:styled-content style=\"fixed-case\">BFS<\/jats:styled-content>) of the anterior and posterior corneal surfaces were evaluated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>There was no systematic or scaling bias in any parameter in both devices. Systematic differences between <jats:styled-content style=\"fixed-case\">CASIA<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">TMS<\/jats:styled-content>\u20105 were found in posterior corneal Kf, Avg K and <jats:styled-content style=\"fixed-case\">BFS<\/jats:styled-content>,<jats:styled-content style=\"fixed-case\"> CCT<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">TCT<\/jats:styled-content> (p\u00a0\u2264\u00a00.002); scaling differences between <jats:styled-content style=\"fixed-case\">CASIA<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">TMS<\/jats:styled-content>\u20105 were also found in <jats:styled-content style=\"fixed-case\">CCT<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">TCT<\/jats:styled-content> (p\u00a0\u2264\u00a00.002). Both machines illustrated adequate reliability. Intraclass correlation coefficients (<jats:styled-content style=\"fixed-case\">ICC<\/jats:styled-content>) \u22650.952 was recorded for all parameters measured with <jats:styled-content style=\"fixed-case\">CASIA<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">ICC<\/jats:styled-content>\u00a0\u2265\u00a00.914 was recorded for all parameters on <jats:styled-content style=\"fixed-case\">TMS<\/jats:styled-content>\u20105. <jats:styled-content style=\"fixed-case\">CASIA<\/jats:styled-content> showed significantly higher <jats:styled-content style=\"fixed-case\">ICC<\/jats:styled-content>s in <jats:styled-content style=\"fixed-case\">CCT<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">TCT<\/jats:styled-content>, and posterior corneal <jats:styled-content style=\"fixed-case\">BFS<\/jats:styled-content> (p\u00a0&lt;\u00a00.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This study showed significant differences in posterior corneal surface and corneal thickness measurements between swept\u2010source <jats:styled-content style=\"fixed-case\">OCT<\/jats:styled-content> and combined Placido\u2013Scheimpflug imaging in eyes with keratoconus. Swept\u2010source <jats:styled-content style=\"fixed-case\">OCT<\/jats:styled-content> might be preferred over Placido\u2013Scheimpflug imaging owing to better repeatability of measurements.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aos.13298","type":"journal-article","created":{"date-parts":[[2016,11,2]],"date-time":"2016-11-02T12:04:10Z","timestamp":1478088250000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":50,"title":["Comparison of corneal measurements in keratoconus using swept\u2010source optical coherence tomography and combined Placido\u2013Scheimpflug imaging"],"prefix":"10.1111","volume":"95","author":[{"given":"Tommy C. 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