{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T14:53:21Z","timestamp":1785164001127,"version":"3.55.0"},"reference-count":34,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2024,5,13]],"date-time":"2024-05-13T00:00:00Z","timestamp":1715558400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Exper Ophthalmology"],"published-print":{"date-parts":[[2024,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>To compare results from different corneal astigmatism measurement instruments; to reconstruct corneal astigmatism from the postimplantation spectacle refraction and toric intraocular lens (IOL) power; and to derive models for mapping measured corneal astigmatism to reconstructed corneal astigmatism.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Retrospective single centre study involving 150 eyes treated with a toric IOL (Alcon SN6AT, DFT or TFNT). Measurements included IOLMaster 700 keratometry (IOLMK) and total keratometry (IOLMTK), Pentacam keratometry (PK) and total corneal refractive power in 3 and 4\u2009mm zones (PTCRP3 and PTCRP4), and Aladdin keratometry (AK). Regression\u2010based models mapping the measured C0 and C45 components (Alpin's method) to reconstructed corneal astigmatism were derived.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Mean C0 components were 0.50\/0.59\/0.51 dioptres (D) for IOLMK\/PK\/AK; 0.2\/0.26\/0.31 D for IOLMTK\/PTCRP3\/PTCRP4; and 0.26 D for reconstructed corneal astigmatism. All corresponding C45 components ranged around 0. The prediction models had main diagonal elements lower than 1 with some crosstalk between C0 and C45 (nonzero off\u2010diagonal elements). Root\u2010mean\u2010squared residuals were 0.44\/0.45\/0.48\/0.51\/0.50\/0.47 D for IOLMK\/IOLMTK\/PK\/PTCRP3\/PTCRP4\/AK.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Results from the different modalities are not consistent. On average IOLMTK\/PTCRP3\/PTCRP4 match reconstructed corneal astigmatism, whereas IOLMK\/PK\/AK show systematic C0 offsets of around 0.25 D. IOLMTK\/PTCRP3\/PTCRP4. Prediction models can reduce but not fully eliminate residual astigmatism after toric IOL implantation.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ceo.14387","type":"journal-article","created":{"date-parts":[[2024,5,14]],"date-time":"2024-05-14T03:25:02Z","timestamp":1715657102000},"page":"627-638","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Evaluating keratometry and corneal astigmatism data from biometers and anterior segment tomographers and mapping to reconstructed corneal astigmatism"],"prefix":"10.1111","volume":"52","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9175-6177","authenticated-orcid":false,"given":"Achim","family":"Langenbucher","sequence":"first","affiliation":[{"name":"Department of Experimental Ophthalmology Saarland University  Homburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leonardo","family":"Taroni","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Morgagni\u2010Pierantoni Hospital  Forl\u00ec Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Catarina P.","family":"Coutinho","sequence":"additional","affiliation":[{"name":"Ophthalmology Studio Oculistico d'Azeglio  Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alan","family":"Cayless","sequence":"additional","affiliation":[{"name":"School of Physical Sciences The Open University  Milton Keynes UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N\u00f3ra","family":"Szentm\u00e1ry","sequence":"additional","affiliation":[{"name":"Dr. Rolf M. 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