Application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyes
Abstract Background The accuracy of using total keratometry (TK) value in recent IOL power calculation formulas in highly myopic eyes remained unknown. Methods Highly myopic patients who underwent uneventful cataract surgery were prospectively enrolled in this prospective comparative study. At one m...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2022-06-01
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| Series: | Eye and Vision |
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| Online Access: | https://doi.org/10.1186/s40662-022-00293-3 |
| _version_ | 1818253092130390016 |
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| author | Ling Wei Kaiwen Cheng Wenwen He Xiangjia Zhu Yi Lu |
| author_facet | Ling Wei Kaiwen Cheng Wenwen He Xiangjia Zhu Yi Lu |
| author_sort | Ling Wei |
| collection | DOAJ |
| description | Abstract Background The accuracy of using total keratometry (TK) value in recent IOL power calculation formulas in highly myopic eyes remained unknown. Methods Highly myopic patients who underwent uneventful cataract surgery were prospectively enrolled in this prospective comparative study. At one month postoperatively, standard deviation (SD) of the prediction errors (PEs), mean and median absolute error (MedAE) of 103 highly myopic eyes were back-calculated and compared among ten formulas, including XGboost, RBF 3.0, Kane, Barrett Universal II, Emmetropia Verifying Optical 2.0, Cooke K6, Haigis, SRK/T, and Wang-Koch modifications of Haigis and SRK/T formulas, using either TK or standard keratometry (K) value. Results In highly myopic eyes, despite good agreement between TK and K (P > 0.05), larger differences between the two were associated with smaller central corneal thickness (P < 0.05). As to the refractive errors, TK method showed no differences compared to K method. The XGBoost, RBF 3.0 and Kane ranked top three when considering SDs of PEs. Using TK value, the XGboost calculator was comparable with the RBF 3.0 formula (P > 0.05), which both presented smaller MedAEs than others (all P < 0.05). As for the percentage of eyes within ± 0.50 D or ± 0.75 D of PE, the XGBoost TK showed comparable percentages with the RBF 3.0 TK formula (74.76% vs. 66.99%, or 90.29% vs. 87.38%, P > 0.05), and statistically larger percentages than the other eight formulas (P < 0.05). Conclusions Highly myopic eyes with thinner corneas tend to have larger differences between TK and K. The XGboost enhancement calculator and RBF 3.0 formula using TK showed the most promising outcomes in highly myopic eyes. |
| first_indexed | 2024-12-12T16:34:34Z |
| format | Article |
| id | doaj.art-535fdd8aee3246f6bae858384d1ece8b |
| institution | Directory Open Access Journal |
| issn | 2326-0254 |
| language | English |
| last_indexed | 2024-12-12T16:34:34Z |
| publishDate | 2022-06-01 |
| publisher | BMC |
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| series | Eye and Vision |
| spelling | doaj.art-535fdd8aee3246f6bae858384d1ece8b2022-12-22T00:18:41ZengBMCEye and Vision2326-02542022-06-01911910.1186/s40662-022-00293-3Application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyesLing Wei0Kaiwen Cheng1Wenwen He2Xiangjia Zhu3Yi Lu4Department of Ophthalmology and Eye Institute, Eye and ENT Hospital of Fudan UniversityDepartment of Ophthalmology and Eye Institute, Eye and ENT Hospital of Fudan UniversityDepartment of Ophthalmology and Eye Institute, Eye and ENT Hospital of Fudan UniversityDepartment of Ophthalmology and Eye Institute, Eye and ENT Hospital of Fudan UniversityDepartment of Ophthalmology and Eye Institute, Eye and ENT Hospital of Fudan UniversityAbstract Background The accuracy of using total keratometry (TK) value in recent IOL power calculation formulas in highly myopic eyes remained unknown. Methods Highly myopic patients who underwent uneventful cataract surgery were prospectively enrolled in this prospective comparative study. At one month postoperatively, standard deviation (SD) of the prediction errors (PEs), mean and median absolute error (MedAE) of 103 highly myopic eyes were back-calculated and compared among ten formulas, including XGboost, RBF 3.0, Kane, Barrett Universal II, Emmetropia Verifying Optical 2.0, Cooke K6, Haigis, SRK/T, and Wang-Koch modifications of Haigis and SRK/T formulas, using either TK or standard keratometry (K) value. Results In highly myopic eyes, despite good agreement between TK and K (P > 0.05), larger differences between the two were associated with smaller central corneal thickness (P < 0.05). As to the refractive errors, TK method showed no differences compared to K method. The XGBoost, RBF 3.0 and Kane ranked top three when considering SDs of PEs. Using TK value, the XGboost calculator was comparable with the RBF 3.0 formula (P > 0.05), which both presented smaller MedAEs than others (all P < 0.05). As for the percentage of eyes within ± 0.50 D or ± 0.75 D of PE, the XGBoost TK showed comparable percentages with the RBF 3.0 TK formula (74.76% vs. 66.99%, or 90.29% vs. 87.38%, P > 0.05), and statistically larger percentages than the other eight formulas (P < 0.05). Conclusions Highly myopic eyes with thinner corneas tend to have larger differences between TK and K. The XGboost enhancement calculator and RBF 3.0 formula using TK showed the most promising outcomes in highly myopic eyes.https://doi.org/10.1186/s40662-022-00293-3High myopiaTotal keratometryCataract surgeryIOL power calculation |
| spellingShingle | Ling Wei Kaiwen Cheng Wenwen He Xiangjia Zhu Yi Lu Application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyes Eye and Vision High myopia Total keratometry Cataract surgery IOL power calculation |
| title | Application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyes |
| title_full | Application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyes |
| title_fullStr | Application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyes |
| title_full_unstemmed | Application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyes |
| title_short | Application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyes |
| title_sort | application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyes |
| topic | High myopia Total keratometry Cataract surgery IOL power calculation |
| url | https://doi.org/10.1186/s40662-022-00293-3 |
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