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Effects of Choroidal Thickness on Refractive Outcome Following Cataract Surgery in Primary Angle Closure
PURPOSE: To identify the preoperative biometric factors, including subfoveal choroidal thickness (CT), associated with refractive outcome after cataract surgery in eyes with primary angle closure (PAC). METHODS: This study included 50 eyes of 50 PAC patients who underwent uneventful cataract surgery...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Korean Ophthalmological Society
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6182207/ https://www.ncbi.nlm.nih.gov/pubmed/30311461 http://dx.doi.org/10.3341/kjo.2017.0129 |
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author | Song, Woo Keun Sung, Kyung Rim Shin, Joong Won Kwon, Junki |
author_facet | Song, Woo Keun Sung, Kyung Rim Shin, Joong Won Kwon, Junki |
author_sort | Song, Woo Keun |
collection | PubMed |
description | PURPOSE: To identify the preoperative biometric factors, including subfoveal choroidal thickness (CT), associated with refractive outcome after cataract surgery in eyes with primary angle closure (PAC). METHODS: This study included 50 eyes of 50 PAC patients who underwent uneventful cataract surgery. Preoperatively, anterior segment parameters including anterior chamber depth (ACD) and lens vault were determined by anterior segment optical coherence tomography. Subfoveal CT was measured by spectral domain optical coherence tomography enhanced depth imaging before and at one month after surgery. Mean refractive error (MRE) was calculated as the difference in spherical equivalent between actual postoperative refraction determined one month postoperatively and that predicted using each of three IOL calculation formulas (SRK/II, SRK/T, and Haigis). Regression analyses were performed to investigate potential associations between MRE and putative factors. RESULTS: Mean ACD was 1.9 ± 0.4 mm, and preoperative subfoveal CT was 250.8 ± 56.9 µm. The SRK/T (MRE, 0.199 ± 0.567 diopters [D]) and Haigis (MRE, 0.190 ± 0.727 D) formulas showed slight hyperopic shift, while the SRK/II formula demonstrated a myopic shift (MRE, −0.077 ± 0.623 D) compared with that expected after cataract surgery. Mean absolute refractive error was not significantly different between formulas. Higher preoperative lens vault and shallower ACD were associated with a hyperopic shift in all formulas, but not in a statistically significant manner. Thicker preoperative subfoveal choroid was associated with a myopic shift after cataract surgery in all formulas (SRK/II: β = −0.511, p < 0.001; SRK/T: β = −0.652, p < 0.001; Haigis: β = −0.671, p < 0.001). Greater postoperative reduction of subfoveal CT was associated with a myopic shift after cataract surgery in all formulas (SRK/II: β = −0.511, p < 0.001; SRK/T: β = −0.652, p < 0.001; Haigis: β = −0.671, p < 0.001). CONCLUSIONS: Our results indicate that preoperative subfoveal CT and the difference between pre- and postoperative subfoveal CT are significant factors for predicting refractive error after cataract surgery in PAC patients. These findings should be considered when performing cataract surgery to optimize visual outcomes. |
format | Online Article Text |
id | pubmed-6182207 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Korean Ophthalmological Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-61822072018-10-15 Effects of Choroidal Thickness on Refractive Outcome Following Cataract Surgery in Primary Angle Closure Song, Woo Keun Sung, Kyung Rim Shin, Joong Won Kwon, Junki Korean J Ophthalmol Original Article PURPOSE: To identify the preoperative biometric factors, including subfoveal choroidal thickness (CT), associated with refractive outcome after cataract surgery in eyes with primary angle closure (PAC). METHODS: This study included 50 eyes of 50 PAC patients who underwent uneventful cataract surgery. Preoperatively, anterior segment parameters including anterior chamber depth (ACD) and lens vault were determined by anterior segment optical coherence tomography. Subfoveal CT was measured by spectral domain optical coherence tomography enhanced depth imaging before and at one month after surgery. Mean refractive error (MRE) was calculated as the difference in spherical equivalent between actual postoperative refraction determined one month postoperatively and that predicted using each of three IOL calculation formulas (SRK/II, SRK/T, and Haigis). Regression analyses were performed to investigate potential associations between MRE and putative factors. RESULTS: Mean ACD was 1.9 ± 0.4 mm, and preoperative subfoveal CT was 250.8 ± 56.9 µm. The SRK/T (MRE, 0.199 ± 0.567 diopters [D]) and Haigis (MRE, 0.190 ± 0.727 D) formulas showed slight hyperopic shift, while the SRK/II formula demonstrated a myopic shift (MRE, −0.077 ± 0.623 D) compared with that expected after cataract surgery. Mean absolute refractive error was not significantly different between formulas. Higher preoperative lens vault and shallower ACD were associated with a hyperopic shift in all formulas, but not in a statistically significant manner. Thicker preoperative subfoveal choroid was associated with a myopic shift after cataract surgery in all formulas (SRK/II: β = −0.511, p < 0.001; SRK/T: β = −0.652, p < 0.001; Haigis: β = −0.671, p < 0.001). Greater postoperative reduction of subfoveal CT was associated with a myopic shift after cataract surgery in all formulas (SRK/II: β = −0.511, p < 0.001; SRK/T: β = −0.652, p < 0.001; Haigis: β = −0.671, p < 0.001). CONCLUSIONS: Our results indicate that preoperative subfoveal CT and the difference between pre- and postoperative subfoveal CT are significant factors for predicting refractive error after cataract surgery in PAC patients. These findings should be considered when performing cataract surgery to optimize visual outcomes. The Korean Ophthalmological Society 2018-10 2018-10-08 /pmc/articles/PMC6182207/ /pubmed/30311461 http://dx.doi.org/10.3341/kjo.2017.0129 Text en © 2018 The Korean Ophthalmological Society 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 non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Song, Woo Keun Sung, Kyung Rim Shin, Joong Won Kwon, Junki Effects of Choroidal Thickness on Refractive Outcome Following Cataract Surgery in Primary Angle Closure |
title | Effects of Choroidal Thickness on Refractive Outcome Following Cataract Surgery in Primary Angle Closure |
title_full | Effects of Choroidal Thickness on Refractive Outcome Following Cataract Surgery in Primary Angle Closure |
title_fullStr | Effects of Choroidal Thickness on Refractive Outcome Following Cataract Surgery in Primary Angle Closure |
title_full_unstemmed | Effects of Choroidal Thickness on Refractive Outcome Following Cataract Surgery in Primary Angle Closure |
title_short | Effects of Choroidal Thickness on Refractive Outcome Following Cataract Surgery in Primary Angle Closure |
title_sort | effects of choroidal thickness on refractive outcome following cataract surgery in primary angle closure |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6182207/ https://www.ncbi.nlm.nih.gov/pubmed/30311461 http://dx.doi.org/10.3341/kjo.2017.0129 |
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