The Effect of Anterior Segment Depth on the Accuracy of 7 Different Intraocular Lens Calculation Formulas
Objectives:To evaluate the effect of anterior segment depth (ASD; sum of anterior chamber depth and lens thickness) on the accuracy of 7 intraocular lens formulas calculated in patients with axial length (AL) between 22.5 and 24.5 mm.Materials and Methods:In this retrospective study, patients who un...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Galenos Yayinevi
2022-08-01
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| Series: | Türk Oftalmoloji Dergisi |
| Subjects: | |
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http://www.oftalmoloji.org/archives/archive-detail/article-preview/the-effect-of-anterior-segment-depth-on-the-accura/52729
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| _version_ | 1828019594425532416 |
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| author | Cem Kesim Ayşe Yıldız-Taş Melisa Zişan Karslıoğlu Murat Hasanreisoğlu Orkun Müftüoğlu Afsun Şahin |
| author_facet | Cem Kesim Ayşe Yıldız-Taş Melisa Zişan Karslıoğlu Murat Hasanreisoğlu Orkun Müftüoğlu Afsun Şahin |
| author_sort | Cem Kesim |
| collection | DOAJ |
| description | Objectives:To evaluate the effect of anterior segment depth (ASD; sum of anterior chamber depth and lens thickness) on the accuracy of 7 intraocular lens formulas calculated in patients with axial length (AL) between 22.5 and 24.5 mm.Materials and Methods:In this retrospective study, patients who underwent cataract surgery were divided into three groups based on their ASD measurements (Group I: ASD <7.30 mm, Group II: ASD between 7.30-7.90 mm, Group III: ASD >7.90 mm). The mean predictive error (MPE), mean absolute error (MAE), and median absolute error (MedAE) values of each group were compared. The effect of ASD on the predictive error (PE) of each lens formula was additionally tested in subgroups based on mean keratometry (K) values (Subgroup I: K <42.0 D, Subgroup II: K between 42.0-44.5 D, Subgroup III: K >44.5 D).Results:The study included 184 eyes of 184 patients. In Group I, all formulas except Olsen OLCR and Barrett II had clinically myopic MPEs. In Group II, the MPEs of all lens formulas except Barrett II were statistically non-different from zero (p>0.05). In Group III, the MPEs of all lens formulas were found to be statistically hyperopic. In Group III, all formulas except Olsen OLCR were significantly shifted to more hyperopic results when compared with Groups I and II (p<0.05). ASD was positively correlated with the PEs of the SRK/T, Holladay I, Hoffer Q, Barrett II, Hill-RBF, and Haigis formulas. In cases with mean K greater than 42.0 D, ASD was similarly correlated with PE for all formulas except Olsen OLCR.Conclusion:In eyes with AL between 22.5 and 24.5 mm, the predictions of lens formulas were significantly hyperopic in cases with greater ASD. |
| first_indexed | 2024-04-10T11:22:44Z |
| format | Article |
| id | doaj.art-d3ab4b91efa14620a734b5240b4121b3 |
| institution | Directory Open Access Journal |
| issn | 1300-0659 2147-2661 |
| language | English |
| last_indexed | 2024-04-10T11:22:44Z |
| publishDate | 2022-08-01 |
| publisher | Galenos Yayinevi |
| record_format | Article |
| series | Türk Oftalmoloji Dergisi |
| spelling | doaj.art-d3ab4b91efa14620a734b5240b4121b32023-02-15T16:18:34ZengGalenos YayineviTürk Oftalmoloji Dergisi1300-06592147-26612022-08-0152422823610.4274/tjo.galenos.2021.4372613049054The Effect of Anterior Segment Depth on the Accuracy of 7 Different Intraocular Lens Calculation FormulasCem Kesim0Ayşe Yıldız-Taş1Melisa Zişan Karslıoğlu2Murat Hasanreisoğlu3Orkun Müftüoğlu4Afsun Şahin5 Koç Üniversitesi Hastanesi, Göz Hastalıkları Kliniği, İstanbul, Türkiye Koç Üniversitesi Tıp Fakültesi, Göz Hastalıkları Anabilim Dalı, İstanbul, Türkiye Koç Üniversitesi Hastanesi, Göz Hastalıkları Kliniği, İstanbul, Türkiye Koç Üniversitesi Tıp Fakültesi, Göz Hastalıkları Anabilim Dalı, İstanbul, Türkiye Koç Üniversitesi Tıp Fakültesi, Göz Hastalıkları Anabilim Dalı, İstanbul, Türkiye Koç Üniversitesi Tıp Fakültesi, Göz Hastalıkları Anabilim Dalı, İstanbul, Türkiye Objectives:To evaluate the effect of anterior segment depth (ASD; sum of anterior chamber depth and lens thickness) on the accuracy of 7 intraocular lens formulas calculated in patients with axial length (AL) between 22.5 and 24.5 mm.Materials and Methods:In this retrospective study, patients who underwent cataract surgery were divided into three groups based on their ASD measurements (Group I: ASD <7.30 mm, Group II: ASD between 7.30-7.90 mm, Group III: ASD >7.90 mm). The mean predictive error (MPE), mean absolute error (MAE), and median absolute error (MedAE) values of each group were compared. The effect of ASD on the predictive error (PE) of each lens formula was additionally tested in subgroups based on mean keratometry (K) values (Subgroup I: K <42.0 D, Subgroup II: K between 42.0-44.5 D, Subgroup III: K >44.5 D).Results:The study included 184 eyes of 184 patients. In Group I, all formulas except Olsen OLCR and Barrett II had clinically myopic MPEs. In Group II, the MPEs of all lens formulas except Barrett II were statistically non-different from zero (p>0.05). In Group III, the MPEs of all lens formulas were found to be statistically hyperopic. In Group III, all formulas except Olsen OLCR were significantly shifted to more hyperopic results when compared with Groups I and II (p<0.05). ASD was positively correlated with the PEs of the SRK/T, Holladay I, Hoffer Q, Barrett II, Hill-RBF, and Haigis formulas. In cases with mean K greater than 42.0 D, ASD was similarly correlated with PE for all formulas except Olsen OLCR.Conclusion:In eyes with AL between 22.5 and 24.5 mm, the predictions of lens formulas were significantly hyperopic in cases with greater ASD. http://www.oftalmoloji.org/archives/archive-detail/article-preview/the-effect-of-anterior-segment-depth-on-the-accura/52729 anterior segment depthpredictive errorlens formulaaxial length |
| spellingShingle | Cem Kesim Ayşe Yıldız-Taş Melisa Zişan Karslıoğlu Murat Hasanreisoğlu Orkun Müftüoğlu Afsun Şahin The Effect of Anterior Segment Depth on the Accuracy of 7 Different Intraocular Lens Calculation Formulas Türk Oftalmoloji Dergisi anterior segment depth predictive error lens formula axial length |
| title | The Effect of Anterior Segment Depth on the Accuracy of 7 Different Intraocular Lens Calculation Formulas |
| title_full | The Effect of Anterior Segment Depth on the Accuracy of 7 Different Intraocular Lens Calculation Formulas |
| title_fullStr | The Effect of Anterior Segment Depth on the Accuracy of 7 Different Intraocular Lens Calculation Formulas |
| title_full_unstemmed | The Effect of Anterior Segment Depth on the Accuracy of 7 Different Intraocular Lens Calculation Formulas |
| title_short | The Effect of Anterior Segment Depth on the Accuracy of 7 Different Intraocular Lens Calculation Formulas |
| title_sort | effect of anterior segment depth on the accuracy of 7 different intraocular lens calculation formulas |
| topic | anterior segment depth predictive error lens formula axial length |
| url |
http://www.oftalmoloji.org/archives/archive-detail/article-preview/the-effect-of-anterior-segment-depth-on-the-accura/52729
|
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