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The evaluated parameters were axial length (AL), central corneal thickness (CCT), aqueous depth (AQD), anterior chamber depth (ACD), lens thickness (LT), flattest and steepest meridian keratometry (Kf and Ks), mean keratometry (Km), astigmatism (AST) magnitude, white-to-white (WTW) distance, and pupil diameter (PD). The within-subject standard deviation (S<jats:sub>w<\/jats:sub>), test\u2013retest repeatability (TRT), coefficient of variation (CoV), and intraclass correlation coefficient (ICC) were calculated to determine the repeatability and reproducibility. Paired t-tests and Bland\u2013Altman plots with 95% limits of agreement (LoA) were employed to assess the agreement.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>With respect to intraobserver repeatability, the S<jats:sub>w<\/jats:sub> and TRT values of all evaluated parameters were low. Except J<jats:sub>45<\/jats:sub> and PD, the ICCs were all higher than 0.928. The reproducibility S<jats:sub>w<\/jats:sub> and TRT values of Colombo IOL were also low, and ICCs were not lower than 0.900. Comparing Colombo IOL and IOLMaster 700, the 95% LoA of AL, CCT, AQD, ACD, LT, Kf, Ks, Km, AST, J<jats:sub>0<\/jats:sub>, J<jats:sub>45<\/jats:sub>, WTW and PD ranged from\u2009\u2212\u20090.08 to 0.03\u00a0mm,\u2009\u2212\u200921.58 to 5.09\u00a0\u03bcm, 0.01 to 0.15\u00a0mm,\u2009\u2212\u20090.01 to 0.14\u00a0mm,\u2009\u2212\u20090.05 to 0.10\u00a0mm,\u2009\u2212\u20090.14 to 0.59 D,\u2009\u2212\u20090.31 to 0.40 D,\u2009\u2212\u20090.13 to 0.40 D,\u2009\u2212\u20090.68 to 0.32 D,\u2009\u2212\u20090.09 to 0.34 D,\u2009\u2212\u20090.07 to 0.25 D, 0.11 to 1.47\u00a0mm, and\u2009\u2212\u20090.97 to 2.31\u00a0mm, respectively.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>The new SD-OCT-based Colombo IOL biometer demonstrates excellent repeatability and reproducibility. Moreover, it generally agrees well with the SS-OCT-based IOLMaster 700, except for the WTW and PD measurements.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1186\/s40662-024-00422-0","type":"journal-article","created":{"date-parts":[[2025,2,1]],"date-time":"2025-02-01T00:03:33Z","timestamp":1738368213000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Repeatability and reproducibility of a new spectral-domain optical coherence tomography biometer and agreement with swept-source optical coherence tomography based biometer"],"prefix":"10.1186","volume":"12","author":[{"given":"Xin","family":"Li","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chak Seng","family":"Lei","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui","family":"Ning","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luze","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aodong","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinning","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giacomo","family":"Savini","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Domenico","family":"Schiano-Lomoriello","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xingtao","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9952-3175","authenticated-orcid":false,"given":"Jinhai","family":"Huang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,2,1]]},"reference":[{"key":"422_CR1","doi-asserted-by":"crossref","first-page":"59","DOI":"10.1007\/978-3-030-16638-0_3","volume-title":"High resolution imaging in microscopy and ophthalmology","author":"S Aumann","year":"2019","unstructured":"Aumann S, Donner S, Fischer J, M\u00fcller F. 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