{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T19:38:11Z","timestamp":1786649891443,"version":"build-2736575974"},"reference-count":26,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2023,2]]},"abstract":"\n Purpose:<\/jats:title>\n To evaluate a method using measured values of total corneal refractive power (TCRP) for a manufacturer\u2019s online calculator by comparing it with the Barrett toric calculator (BTC) and Kane toric calculator (KTC) combined with simulated keratometry values (SimK).<\/jats:p>\n <\/jats:sec>\n \n Methods:<\/jats:title>\n This was a retrospective case series. Patient records were reviewed to identify the patients who had biometry with the IOL Master 700 and Pentacam recorded before toric IOL implantation and refractive follow-up data after implantation. The predicted error in residual astigmatism was calculated by vector analysis according to the calculation methods and the measurements used.<\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n \n A total of 70 eyes of 56 patients were included. The mean absolute astigmatism prediction errors were 0.6 \u00b1 0.32, 0.59 \u00b1 0.35, and 0.61 \u00b1 0.35 D for the ATC\n TCRP<\/jats:sub>\n , BTC\n SimK<\/jats:sub>\n , and KTC\n SimK<\/jats:sub>\n calculators, respectively (\n P<\/jats:italic>\n = 0.934), and the centroid of the prediction errors were 0.3 D @ 178\u00b0, 0.11 D @ 102\u00b0, and 0.09 D @ 147\u00b0, respectively (\n P<\/jats:italic>\n = 0.23). In the with-the-rule subgroup, the centroid of the prediction error was 0.34 D @ 176\u00b0 for ATC\n TCRP<\/jats:sub>\n and was the highest among the three calculation methods (\n P<\/jats:italic>\n = 0.046).\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion:<\/jats:title>\n \n The ATC\n TCRP<\/jats:sub>\n , BTC\n SimK<\/jats:sub>\n , and KTC\n SimK<\/jats:sub>\n calculators had similar performance with regards to their astigmatism prediction accuracy. The ATC\n TCRP<\/jats:sub>\n calculator combined with 4.0-mm apex\/ring readings of TCRP was slightly intended to result in against-the-rule residual astigmatism.\n <\/jats:p>\n <\/jats:sec>","DOI":"10.4103\/ijo.ijo_1539_22","type":"journal-article","created":{"date-parts":[[2023,2,2]],"date-time":"2023-02-02T09:22:50Z","timestamp":1675329770000},"page":"541-546","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":3,"title":["An evaluation of the accuracy of toric intraocular lens power calculation based on measured total corneal refractive power"],"prefix":"10.4103","volume":"71","author":[{"given":"Zhi","family":"Yang","sequence":"first","affiliation":[{"name":"Department of Cataract, Shenyang Aier Eye Optometry Hospital, Shenyang, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanwen","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Cataract, Shenyang Aier Eye Optometry Hospital, Shenyang, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tianru","family":"Jin","sequence":"additional","affiliation":[{"name":"Department of Cataract, Shenyang Aier Eye Optometry Hospital, Shenyang, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingjing","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Cataract, Shenyang Aier Eye Optometry Hospital, Shenyang, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2023,2,2]]},"reference":[{"key":"R1-20251006","first-page":"451","article-title":"Toric intraocular lens versus opposite clear corneal incisions to correct astigmatism in eyes having cataract surgery","volume":"35","author":"Mendicute","year":"2009","journal-title":"J Cataract Refract Surg"},{"key":"R2-20251006","first-page":"574","article-title":"Femtosecond laser-assisted arcuate keratotomy versus toric IOL implantation for 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postoperative astigmatism after implantation of a toric intraocular lens using two different calculators","volume":"14","author":"Pantanelli","year":"2020","journal-title":"Clin Ophthalmol"},{"key":"R21-20251006","first-page":"115","article-title":"The X2 test for data collected on eyes","volume":"77","author":"Thompson","year":"1993","journal-title":"Br J Ophthalmol"},{"key":"R22-20251006","first-page":"686","article-title":"Accuracy of total corneal power calculation for multifocal toric intraocular lens implantation:Swept-source OCT-based Biometer vs Scheimpflug tomographer","volume":"37","author":"Choi","year":"2021","journal-title":"J Refract Surg"},{"key":"R23-20251006","first-page":"72","article-title":"Accuracy of a dual Scheimpflug analyzer and a corneal topography system for intraocular lens power calculation in unoperated eyes","volume":"37","author":"Savini","year":"2011","journal-title":"J Cataract Refract 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