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Central (CCT) and thinnest (TCT) corneal thickness were assessed. Corneal densitometry and TKC classification were assessed by Pentacam HR only. Intraoperative CCT evolution was monitored using ultrasound (Pachymeter SP-3000, Tomey, Japan) to ensure that CCT did not fall below 400\u00a0\u00b5m.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>CCT and TCT measured by Pentacam HR were significantly lower than preoperatively during the first postoperative year, while Casia 2 CCT and TCT measurements were not significantly lower than preoperatively at any time. The highest agreement of Pentacam HR and Casia 2 measurements occurred six weeks after A-CXL. Corneal densitometry peaked six weeks after A-CXL and decreased thereafter without reaching pre-A-CXL values. Ultrasound revealed significant CCT thinning during A-CXL.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Corneal Scheimpflug and AS-OCT based thickness measurements are not interchangeable. Corneal thinning after A-CXL detected by Pentacam HR was not observed in Casia 2 measurements. Since higher densitometry values did not correlate with a greater inter-device measurement difference, Scheimpflug-based corneal thickness measurements should be interpreted cautiously during the first year after A-CXL.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s10792-025-03763-4","type":"journal-article","created":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T04:33:20Z","timestamp":1764909200000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Comparison of corneal pachymetry evolution after accelerated corneal crosslinking in keratoconus eyes using anterior segment optical coherence tomography and Scheimpflug imaging"],"prefix":"10.1007","volume":"46","author":[{"given":"Antonia","family":"Lang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Berthold","family":"Seitz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cristian","family":"Munteanu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elias","family":"Flockerzi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,12,5]]},"reference":[{"key":"3763_CR1","doi-asserted-by":"publisher","DOI":"10.3389\/fmed.2023.1212314","volume":"10","author":"R Deshmukh","year":"2023","unstructured":"Deshmukh R, Ong ZZ, Rampat R et al (2023) Management of keratoconus: an updated review. 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