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Inaccuracy of Intraocular Lens Power Prediction for Cataract Surgery in Angle-Closure Glaucoma
PURPOSE: To assess the accuracy of intraocular lens (IOL) power predictions for cataract surgery in eyes with primary angle-closure glaucoma (ACG). Because of shifting of the capsular bag apparatus and shortening of the axial length, preoperative calculation of IOL power may be inaccurate for eyes w...
Autores principales: | , , , , |
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Formato: | Texto |
Lenguaje: | English |
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Yonsei University College of Medicine
2009
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2678694/ https://www.ncbi.nlm.nih.gov/pubmed/19430552 http://dx.doi.org/10.3349/ymj.2009.50.2.206 |
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author | Kang, Sung Yong Hong, Samin Won, Jung Bin Seong, Gong Je Kim, Chan Yun |
author_facet | Kang, Sung Yong Hong, Samin Won, Jung Bin Seong, Gong Je Kim, Chan Yun |
author_sort | Kang, Sung Yong |
collection | PubMed |
description | PURPOSE: To assess the accuracy of intraocular lens (IOL) power predictions for cataract surgery in eyes with primary angle-closure glaucoma (ACG). Because of shifting of the capsular bag apparatus and shortening of the axial length, preoperative calculation of IOL power may be inaccurate for eyes with ACG. MATERIALS AND METHODS: This retrospective comparative case series comprised of 42 eyes from 42 patients with primary ACG and 45 eyes from 45 subjects with normal open-angles undergoing uneventful cataract surgery. Anterior segment biometry including anterior chamber depth, lens thickness, and axial length were compared. Using the SRK-II formula, the powers of the implanted IOL and the actual postoperative spherical equivalent (SE) refractive errors were compared between the two groups. Also, the absolute values of differences between predicted and residual SE refractive errors were also analyzed for each group. RESULTS: In ACG patients, anterior chamber depth and axial length were shorter and the lens was thicker than normal controls (all p < 0.001). Even though residual SE refractive error was not significantly different (p = 0.290), the absolute value of the difference between predicted and residual SE refractive error was 0.64 ± 0.50 diopters in AGC patients and 0.39 ± 0.36 diopters in control subjects (p = 0.012). The number of eyes that resulted in inaccurate IOL power predictions of more than 0.5 diopters were 21 (50.00%) in the ACG group, but only 12 (26.67%) in the control group (p = 0.043). CONCLUSION: IOL power predictions for cataract surgery in ACG patients can be inaccurate, and it may be associated with their unique anterior segment anatomy. |
format | Text |
id | pubmed-2678694 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Yonsei University College of Medicine |
record_format | MEDLINE/PubMed |
spelling | pubmed-26786942009-05-08 Inaccuracy of Intraocular Lens Power Prediction for Cataract Surgery in Angle-Closure Glaucoma Kang, Sung Yong Hong, Samin Won, Jung Bin Seong, Gong Je Kim, Chan Yun Yonsei Med J Original Article PURPOSE: To assess the accuracy of intraocular lens (IOL) power predictions for cataract surgery in eyes with primary angle-closure glaucoma (ACG). Because of shifting of the capsular bag apparatus and shortening of the axial length, preoperative calculation of IOL power may be inaccurate for eyes with ACG. MATERIALS AND METHODS: This retrospective comparative case series comprised of 42 eyes from 42 patients with primary ACG and 45 eyes from 45 subjects with normal open-angles undergoing uneventful cataract surgery. Anterior segment biometry including anterior chamber depth, lens thickness, and axial length were compared. Using the SRK-II formula, the powers of the implanted IOL and the actual postoperative spherical equivalent (SE) refractive errors were compared between the two groups. Also, the absolute values of differences between predicted and residual SE refractive errors were also analyzed for each group. RESULTS: In ACG patients, anterior chamber depth and axial length were shorter and the lens was thicker than normal controls (all p < 0.001). Even though residual SE refractive error was not significantly different (p = 0.290), the absolute value of the difference between predicted and residual SE refractive error was 0.64 ± 0.50 diopters in AGC patients and 0.39 ± 0.36 diopters in control subjects (p = 0.012). The number of eyes that resulted in inaccurate IOL power predictions of more than 0.5 diopters were 21 (50.00%) in the ACG group, but only 12 (26.67%) in the control group (p = 0.043). CONCLUSION: IOL power predictions for cataract surgery in ACG patients can be inaccurate, and it may be associated with their unique anterior segment anatomy. Yonsei University College of Medicine 2009-04-30 2009-04-30 /pmc/articles/PMC2678694/ /pubmed/19430552 http://dx.doi.org/10.3349/ymj.2009.50.2.206 Text en © Copyright: Yonsei University College of Medicine 2009 http://creativecommons.org/licenses/by-nc/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Kang, Sung Yong Hong, Samin Won, Jung Bin Seong, Gong Je Kim, Chan Yun Inaccuracy of Intraocular Lens Power Prediction for Cataract Surgery in Angle-Closure Glaucoma |
title | Inaccuracy of Intraocular Lens Power Prediction for Cataract Surgery in Angle-Closure Glaucoma |
title_full | Inaccuracy of Intraocular Lens Power Prediction for Cataract Surgery in Angle-Closure Glaucoma |
title_fullStr | Inaccuracy of Intraocular Lens Power Prediction for Cataract Surgery in Angle-Closure Glaucoma |
title_full_unstemmed | Inaccuracy of Intraocular Lens Power Prediction for Cataract Surgery in Angle-Closure Glaucoma |
title_short | Inaccuracy of Intraocular Lens Power Prediction for Cataract Surgery in Angle-Closure Glaucoma |
title_sort | inaccuracy of intraocular lens power prediction for cataract surgery in angle-closure glaucoma |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2678694/ https://www.ncbi.nlm.nih.gov/pubmed/19430552 http://dx.doi.org/10.3349/ymj.2009.50.2.206 |
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