{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T22:50:52Z","timestamp":1787698252166,"version":"build-2784847793"},"reference-count":23,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2020,4,27]],"date-time":"2020-04-27T00:00:00Z","timestamp":1587945600000},"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":["Clinical Exper Ophthalmology"],"published-print":{"date-parts":[[2020,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Importance<\/jats:title><jats:p>Intraocular lens (IOL) calculations in post\u2010refractive cases remain a concern. Our study identifies improved options for surgeons.<\/jats:p><\/jats:sec><jats:sec><jats:title>Background<\/jats:title><jats:p>To evaluate and compare the prediction accuracy of IOL power calculation methods after previous laser refractive surgery using standard keratometry (SK), measured posterior corneal astigmatism (PCA) and total keratometry (TK).<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Retrospective consecutive cohort.<\/jats:p><\/jats:sec><jats:sec><jats:title>Participants<\/jats:title><jats:p>A total of 50 consecutive patients (72 eyes) at a private institution who underwent cataract surgery with prior laser refractive procedures.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Methods using SK included ASCRS mean, Barrett True\u2010K no history, Haigis\u2010L and Shammas IOL formulae. Barrett True\u2010K using posterior values (True K TK), Haigis and Holladay 1 Double\u2010K methods using TK were also assessed. Post\u2010surgery refraction was undertaken at minimum 3\u2009weeks following surgery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main Outcome Measures<\/jats:title><jats:p>Arithmetic and absolute IOL refractive prediction errors, variances in mean arithmetic IOL prediction error, and percentage of eyes within \u00b10.25D, \u00b10.50D, \u00b10.75D and\u2009\u00b11.00D of refractive prediction errors were compared.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The Barrett True\u2010K (TK) provided the lowest mean refractive prediction error (RPE) and variance for both prior myopes and hyperopes undergoing cataract surgery. The Barrett True\u2010K (TK) exhibited the highest percentages of eyes within \u00b10.50D, \u00b10.75D and\u2009\u00b11.00D of the RPE compared to other formulae for prior myopic patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions and Relevance<\/jats:title><jats:p>Accuracy of IOL power calculations in post\u2010laser eyes can be improved by the addition of posterior corneal values as measured by the IOLMaster 700. The use of total keratometry may supplement outcomes when no prior refraction history is known.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ceo.13760","type":"journal-article","created":{"date-parts":[[2020,4,12]],"date-time":"2020-04-12T07:43:17Z","timestamp":1586677397000},"page":"749-756","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":86,"title":["Total keratometry in intraocular lens power calculations in eyes with previous laser refractive surgery"],"prefix":"10.1111","volume":"48","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0713-9350","authenticated-orcid":false,"given":"Michael","family":"Lawless","sequence":"first","affiliation":[{"name":"Vision Eye Institute Chatswood  Sydney New South Wales Australia"},{"name":"Sydney Medical School The University of Sydney  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9596-6673","authenticated-orcid":false,"given":"James Y.","family":"Jiang","sequence":"additional","affiliation":[{"name":"Northern Sydney Local Health District  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0516-6486","authenticated-orcid":false,"given":"Chris","family":"Hodge","sequence":"additional","affiliation":[{"name":"Vision Eye Institute Chatswood  Sydney New South Wales Australia"},{"name":"Sydney Medical School The University of Sydney  Sydney New South Wales Australia"},{"name":"Graduate School of Health University of Technology Sydney  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gerard","family":"Sutton","sequence":"additional","affiliation":[{"name":"Vision Eye Institute Chatswood  Sydney New South Wales Australia"},{"name":"Sydney Medical School The University of Sydney  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timothy V.","family":"Roberts","sequence":"additional","affiliation":[{"name":"Vision Eye Institute Chatswood  Sydney New South Wales Australia"},{"name":"Sydney Medical School The University of Sydney  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Graham","family":"Barrett","sequence":"additional","affiliation":[{"name":"Lions Eye Institute  Perth Western Australia Australia"},{"name":"Centre for Ophthalmology and Visual Science University of Western Australia  Western Australia Australia"},{"name":"Sir Charles Gairdner Hospital  Perth Western Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,4,27]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40662-015-0017-3"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2015.10.026"},{"key":"e_1_2_5_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0886-3350(03)00957-X"},{"key":"e_1_2_5_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2009.01.005"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2018.12.006"},{"key":"e_1_2_5_7_1","doi-asserted-by":"publisher","DOI":"10.3928\/1081597X-20181119-01"},{"key":"e_1_2_5_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2018.05.018"},{"key":"e_1_2_5_9_1","doi-asserted-by":"publisher","DOI":"10.1177\/1120672118804950"},{"key":"e_1_2_5_10_1","doi-asserted-by":"publisher","DOI":"10.3341\/kjo.2018.0008"},{"key":"e_1_2_5_11_1","doi-asserted-by":"publisher","DOI":"10.3928\/1081597X-20180214-02"},{"key":"e_1_2_5_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrs.2019.05.020"},{"key":"e_1_2_5_13_1","doi-asserted-by":"publisher","DOI":"10.3928\/1081597X-20190422-02"},{"key":"e_1_2_5_14_1","unstructured":"BarrettG.True\u2010K formula: new approach to biometry after LASIK. 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