Comparative evaluation of several toric intraocular lens calculators for predicting postoperative refractive astigmatism in cataract surgery: a real-world study
Abstract Background This study aims to comprehensively evaluate the predictive accuracy of six widely used toric intraocular lens (IOL) calculators in eyes undergoing cataract surgery with toric IOL implantation. Methods This retrospective study reviewed 53 eyes of 53 patients that underwent catarac...
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2025-01-01
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| Online Access: | https://doi.org/10.1186/s12886-025-03856-9 |
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| author | Haocheng Xian Bingzhen Li Ziyao Xia Chun Zhang Xuemin Li |
| author_facet | Haocheng Xian Bingzhen Li Ziyao Xia Chun Zhang Xuemin Li |
| author_sort | Haocheng Xian |
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| description | Abstract Background This study aims to comprehensively evaluate the predictive accuracy of six widely used toric intraocular lens (IOL) calculators in eyes undergoing cataract surgery with toric IOL implantation. Methods This retrospective study reviewed 53 eyes of 53 patients that underwent cataract extraction with toric IOL implantation using Zeiss 709 M. Six toric IOL calculators were evaluated: Barrett toric calculator (with predicted PCA, measured PCA, and TK), Kane formula (predicted PCA), and EVO 2.0 formula (predicted and measured PCA). Postoperative refractive astigmatism prediction errors were comprehensively calculated and analyzed using vector analysis. Results The mean absolute prediction error (APE) ranged from 0.56 ± 0.37 D (Barrett TK) to 0.63 ± 0.46 D (Barrett predicted PCA, PPCA). The proportions of eyes achieving APE ≤ 1.0 D were highest for Barrett TK and Kane predicted PCA (90.6%). The highest proportions of eyes achieving APE ≤ 0.25 D and ≤ 0.50 D were observed with Barrett measured PCA (18.9% and 56.6%, respectively), while the lowest with Barrett PPCA (9.4% and 50.9%, respectively). The study found no statistically significant differences in mean absolute prediction error (APE) among the six calculators (χ² = 6.88, P = 0.23) and the centroid of PE (P = 0.93). A difference in mean APE was observed between the Barrett predicted PCA and Barrett TK calculators (P = 0.02). Conclusion The study confirms the importance of considering posterior corneal astigmatism remains essential to achieving precise refractive outcomes but also underscores the need for ongoing refinement and evaluation to optimize surgical outcomes. |
| format | Article |
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| institution | Kabale University |
| issn | 1471-2415 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | BMC |
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| series | BMC Ophthalmology |
| spelling | doaj-art-0d1bd0d80fb14d4b874e90743dbbc8512025-01-26T12:21:05ZengBMCBMC Ophthalmology1471-24152025-01-012511810.1186/s12886-025-03856-9Comparative evaluation of several toric intraocular lens calculators for predicting postoperative refractive astigmatism in cataract surgery: a real-world studyHaocheng Xian0Bingzhen Li1Ziyao Xia2Chun Zhang3Xuemin Li4Department of Ophthalmology, Peking University Third HospitalDepartment of Ophthalmology, Peking University Third HospitalDepartment of Ophthalmology, Peking University Third Hospital Beijing Tsinghua Changgung Hospital Eye Center, Beijing Tsinghua Changgung Hospital, Tsinghua Medicine, Tsinghua UniversityDepartment of Ophthalmology, Peking University Third HospitalAbstract Background This study aims to comprehensively evaluate the predictive accuracy of six widely used toric intraocular lens (IOL) calculators in eyes undergoing cataract surgery with toric IOL implantation. Methods This retrospective study reviewed 53 eyes of 53 patients that underwent cataract extraction with toric IOL implantation using Zeiss 709 M. Six toric IOL calculators were evaluated: Barrett toric calculator (with predicted PCA, measured PCA, and TK), Kane formula (predicted PCA), and EVO 2.0 formula (predicted and measured PCA). Postoperative refractive astigmatism prediction errors were comprehensively calculated and analyzed using vector analysis. Results The mean absolute prediction error (APE) ranged from 0.56 ± 0.37 D (Barrett TK) to 0.63 ± 0.46 D (Barrett predicted PCA, PPCA). The proportions of eyes achieving APE ≤ 1.0 D were highest for Barrett TK and Kane predicted PCA (90.6%). The highest proportions of eyes achieving APE ≤ 0.25 D and ≤ 0.50 D were observed with Barrett measured PCA (18.9% and 56.6%, respectively), while the lowest with Barrett PPCA (9.4% and 50.9%, respectively). The study found no statistically significant differences in mean absolute prediction error (APE) among the six calculators (χ² = 6.88, P = 0.23) and the centroid of PE (P = 0.93). A difference in mean APE was observed between the Barrett predicted PCA and Barrett TK calculators (P = 0.02). Conclusion The study confirms the importance of considering posterior corneal astigmatism remains essential to achieving precise refractive outcomes but also underscores the need for ongoing refinement and evaluation to optimize surgical outcomes.https://doi.org/10.1186/s12886-025-03856-9Cataract surgeryIntraocular lensesIOL power calculation |
| spellingShingle | Haocheng Xian Bingzhen Li Ziyao Xia Chun Zhang Xuemin Li Comparative evaluation of several toric intraocular lens calculators for predicting postoperative refractive astigmatism in cataract surgery: a real-world study BMC Ophthalmology Cataract surgery Intraocular lenses IOL power calculation |
| title | Comparative evaluation of several toric intraocular lens calculators for predicting postoperative refractive astigmatism in cataract surgery: a real-world study |
| title_full | Comparative evaluation of several toric intraocular lens calculators for predicting postoperative refractive astigmatism in cataract surgery: a real-world study |
| title_fullStr | Comparative evaluation of several toric intraocular lens calculators for predicting postoperative refractive astigmatism in cataract surgery: a real-world study |
| title_full_unstemmed | Comparative evaluation of several toric intraocular lens calculators for predicting postoperative refractive astigmatism in cataract surgery: a real-world study |
| title_short | Comparative evaluation of several toric intraocular lens calculators for predicting postoperative refractive astigmatism in cataract surgery: a real-world study |
| title_sort | comparative evaluation of several toric intraocular lens calculators for predicting postoperative refractive astigmatism in cataract surgery a real world study |
| topic | Cataract surgery Intraocular lenses IOL power calculation |
| url | https://doi.org/10.1186/s12886-025-03856-9 |
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