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Measurements were repeated for three times using the ZW-30 and IOLMaster 700 in a random order. Obtained parameters included axial length (AL), central corneal thickness (CCT), aqueous depth (AQD), anterior chamber depth (ACD), lens thickness (LT), mean keratometry (Km), astigmatism magnitude (AST), vector J<jats:sub>0<\/jats:sub>, vector J<jats:sub>45<\/jats:sub>, and corneal diameter (CD). The within-subject standard deviation (Sw), test\u2013retest (TRT) variability, coefficient of variation (CoV), and intraclass correlation coefficient (ICC) were adopted to assess the intraobserver repeatability and interobserver reproducibility. The double-angle plot was also used to display the distribution of AST. To estimate agreement, Bland\u2013Altman plots were used.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>For the intraobserver repeatability and interobserver reproducibility, the Sw, TRT and CoV for all parameters were low. Meanwhile, the ICC values were all close to 1.000, except for the J<jats:sub>45<\/jats:sub> (ICC\u2009=\u20090.887 for the intraobserver repeatability). The double-angle plot showed that the distribution of AST measured by these two devices was similar. For agreement, the Bland\u2013Altman plots showed narrow 95% limits of agreements (LoAs) for AL, CCT, AQD, ACD, LT, Km AST, J<jats:sub>0<\/jats:sub>, J<jats:sub>45<\/jats:sub>, and CD (\u2212\u20090.02\u00a0mm to 0.02\u00a0mm,\u2009\u2212\u20097.49\u00a0\u03bcm to 8.08\u00a0\u03bcm,\u2009\u2212\u20090.07\u00a0mm to 0.04\u00a0mm,\u2009\u2212\u20090.07\u00a0mm to 0.04\u00a0mm,\u2009\u2212\u20090.07\u00a0mm to 0.08\u00a0mm,\u2009\u2212\u20090.16 D to 0.30 D,\u2009\u2212\u20090.30 D to 0.29 D,\u2009\u2212\u20090.16 D to 0.16 D,\u2009\u2212\u20090.23 D to 0.13 D, and\u2009\u2212\u20090.39\u00a0mm to 0.10\u00a0mm, respectively).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>The newly dynamic real-time visualization biometer exhibited excellent intraobserver repeatability and interobserver reproducibility. The two devices both based on the SS-OCT principle had similar ocular parameters measurement values and can be interchanged in clinical practice.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s40662-024-00377-2","type":"journal-article","created":{"date-parts":[[2024,3,4]],"date-time":"2024-03-04T04:10:12Z","timestamp":1709525412000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Evaluation of a new dynamic real-time visualization 25\u00a0kHz swept-source optical coherence tomography based biometer"],"prefix":"10.1186","volume":"11","author":[{"given":"Jinjin","family":"Yu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuanqiao","family":"Lin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaomin","family":"Huang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhenyu","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui","family":"Ning","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kexin","family":"Li","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":[[2024,3,4]]},"reference":[{"issue":"11","key":"377_CR1","doi-asserted-by":"publisher","first-page":"1321","DOI":"10.1016\/j.jcrs.2018.07.053","volume":"44","author":"M Amro","year":"2018","unstructured":"Amro M, Chanbour W, Arej N, Jarade E. 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All patients were informed in advance about the purpose of the study and signed an informed consent following the tenets of the Helsinki Declaration.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"Dr. Savini received lecture fees from Alcon, Johnson & Johnson, SIFI and Zeiss and research grant from Alcon. Other authors have no proprietary or financial interest in any materials discussed in this article.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"9"}}