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IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image
PURPOSE: To evaluate intraocular lens (IOL) tilt and decentration by anterior segment optical coherence tomography (AS-OCT) using 3-dimensional (3D) reconstruction method. DESIGN: Prospective observational case series. PARTICIPANTS: Thirty-nine patients (39 eyes) were included. METHODS: The IOL posi...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Public Library of Science
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3598664/ https://www.ncbi.nlm.nih.gov/pubmed/23554982 http://dx.doi.org/10.1371/journal.pone.0059109 |
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author | Wang, Xiaogang Dong, Jing Wang, Xiaoliang Wu, Qiang |
author_facet | Wang, Xiaogang Dong, Jing Wang, Xiaoliang Wu, Qiang |
author_sort | Wang, Xiaogang |
collection | PubMed |
description | PURPOSE: To evaluate intraocular lens (IOL) tilt and decentration by anterior segment optical coherence tomography (AS-OCT) using 3-dimensional (3D) reconstruction method. DESIGN: Prospective observational case series. PARTICIPANTS: Thirty-nine patients (39 eyes) were included. METHODS: The IOL positions of all eyes were examined by AS-OCT. Images were obtained in 4 axes (0–180 degrees, 45–225 degrees, 90–270 degrees, and 135–315 degrees) using the quadrant-scan model. The cross-sectional images were analyzed with MATLAB software. MAIN OUTCOME MEASURES: The angle (θ) between the reference pupillary plane and the IOL plane, the distances between the center points of the pupil circle and the IOL on the x-axis (dx) and y-axis (dy) and the spatial distance (ds) were calculated after 3D-reconstruction. RESULTS: The mean angle (θ) between the pupillary plane and the IOL plane was 2.94±0.99 degrees. The mean IOL decentration of dx and dy was 0.32±0.26 mm and 0.40±0.27 mm, respectively. The ds of the IOL decentration was 0.56±0.31 mm. There was no significant correlation between the ocular residual astigmatism (ORA) and the tilted angle or the decentration distance. There was a significant correlation between the ORA and total astigmatism (r = 0.742, P<0.001). There was no significant correlation between the postoperative best corrected visual acuity (BCVA) and the ORA (r = 0.156; P = 0.344), total astigmatism (r = 0.012; P = 0.942), tilted angle (θ; r = 0.172; P = 0.295) or decentration distance (dx: r = 0.191, P = 0.244; dy: r = 0.253, P = 0.121; ds: r = 0.298, P = 0.065). CONCLUSIONS: AS-OCT can be used as an alternative for the analysis of IOL tilt and decentration using 3D-reconstruction. |
format | Online Article Text |
id | pubmed-3598664 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-35986642013-04-02 IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image Wang, Xiaogang Dong, Jing Wang, Xiaoliang Wu, Qiang PLoS One Research Article PURPOSE: To evaluate intraocular lens (IOL) tilt and decentration by anterior segment optical coherence tomography (AS-OCT) using 3-dimensional (3D) reconstruction method. DESIGN: Prospective observational case series. PARTICIPANTS: Thirty-nine patients (39 eyes) were included. METHODS: The IOL positions of all eyes were examined by AS-OCT. Images were obtained in 4 axes (0–180 degrees, 45–225 degrees, 90–270 degrees, and 135–315 degrees) using the quadrant-scan model. The cross-sectional images were analyzed with MATLAB software. MAIN OUTCOME MEASURES: The angle (θ) between the reference pupillary plane and the IOL plane, the distances between the center points of the pupil circle and the IOL on the x-axis (dx) and y-axis (dy) and the spatial distance (ds) were calculated after 3D-reconstruction. RESULTS: The mean angle (θ) between the pupillary plane and the IOL plane was 2.94±0.99 degrees. The mean IOL decentration of dx and dy was 0.32±0.26 mm and 0.40±0.27 mm, respectively. The ds of the IOL decentration was 0.56±0.31 mm. There was no significant correlation between the ocular residual astigmatism (ORA) and the tilted angle or the decentration distance. There was a significant correlation between the ORA and total astigmatism (r = 0.742, P<0.001). There was no significant correlation between the postoperative best corrected visual acuity (BCVA) and the ORA (r = 0.156; P = 0.344), total astigmatism (r = 0.012; P = 0.942), tilted angle (θ; r = 0.172; P = 0.295) or decentration distance (dx: r = 0.191, P = 0.244; dy: r = 0.253, P = 0.121; ds: r = 0.298, P = 0.065). CONCLUSIONS: AS-OCT can be used as an alternative for the analysis of IOL tilt and decentration using 3D-reconstruction. Public Library of Science 2013-03-15 /pmc/articles/PMC3598664/ /pubmed/23554982 http://dx.doi.org/10.1371/journal.pone.0059109 Text en © 2013 Wang et al http://creativecommons.org/licenses/by/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 author and source are properly credited. |
spellingShingle | Research Article Wang, Xiaogang Dong, Jing Wang, Xiaoliang Wu, Qiang IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image |
title | IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image |
title_full | IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image |
title_fullStr | IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image |
title_full_unstemmed | IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image |
title_short | IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image |
title_sort | iol tilt and decentration estimation from 3 dimensional reconstruction of oct image |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3598664/ https://www.ncbi.nlm.nih.gov/pubmed/23554982 http://dx.doi.org/10.1371/journal.pone.0059109 |
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