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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...

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Autores principales: Kesim, Cem, Yıldız-Taş, Ayşe, Karslıoğlu, Melisa Zişan, Hasanreisoğlu, Murat, Müftüoğlu, Orkun, Şahin, Afsun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Galenos Publishing 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9421936/
https://www.ncbi.nlm.nih.gov/pubmed/36016720
http://dx.doi.org/10.4274/tjo.galenos.2021.43726
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author Kesim, Cem
Yıldız-Taş, Ayşe
Karslıoğlu, Melisa Zişan
Hasanreisoğlu, Murat
Müftüoğlu, Orkun
Şahin, Afsun
author_facet Kesim, Cem
Yıldız-Taş, Ayşe
Karslıoğlu, Melisa Zişan
Hasanreisoğlu, Murat
Müftüoğlu, Orkun
Şahin, Afsun
author_sort Kesim, Cem
collection PubMed
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.
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spelling pubmed-94219362022-09-06 The Effect of Anterior Segment Depth on the Accuracy of 7 Different Intraocular Lens Calculation Formulas Kesim, Cem Yıldız-Taş, Ayşe Karslıoğlu, Melisa Zişan Hasanreisoğlu, Murat Müftüoğlu, Orkun Şahin, Afsun Turk J Ophthalmol Original Article 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. Galenos Publishing 2022-08 2022-08-25 /pmc/articles/PMC9421936/ /pubmed/36016720 http://dx.doi.org/10.4274/tjo.galenos.2021.43726 Text en © Copyright 2022 by Turkish Ophthalmological Association | Turkish Journal of Ophthalmology, published by Galenos Publishing House. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Kesim, Cem
Yıldız-Taş, Ayşe
Karslıoğlu, Melisa Zişan
Hasanreisoğlu, Murat
Müftüoğlu, Orkun
Şahin, Afsun
The Effect of Anterior Segment Depth on the Accuracy of 7 Different Intraocular Lens Calculation Formulas
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 Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9421936/
https://www.ncbi.nlm.nih.gov/pubmed/36016720
http://dx.doi.org/10.4274/tjo.galenos.2021.43726
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