IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image
Identifieur interne : 001B30 ( Main/Merge ); précédent : 001B29; suivant : 001B31IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image
Auteurs : Xiaogang Wang [République populaire de Chine] ; Jing Dong [République populaire de Chine] ; Xiaoliang Wang [République populaire de Chine] ; Qiang Wu [République populaire de Chine]Source :
- PLoS ONE [ 1932-6203 ] ; 2013.
Abstract
To evaluate intraocular lens (IOL) tilt and decentration by anterior segment optical coherence tomography (AS-OCT) using 3-dimensional (3D) reconstruction method.
Prospective observational case series.
Thirty-nine patients (39 eyes) were included.
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.
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.
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,
AS-OCT can be used as an alternative for the analysis of IOL tilt and decentration using 3D-reconstruction.
Url:
DOI: 10.1371/journal.pone.0059109
PubMed: 23554982
PubMed Central: 3598664
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image</title><author><name sortKey="Wang, Xiaogang" sort="Wang, Xiaogang" uniqKey="Wang X" first="Xiaogang" last="Wang">Xiaogang Wang</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, P. R. China</addr-line></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai</wicri:regionArea><wicri:noRegion>Shanghai</wicri:noRegion></affiliation></author><author><name sortKey="Dong, Jing" sort="Dong, Jing" uniqKey="Dong J" first="Jing" last="Dong">Jing Dong</name><affiliation wicri:level="1"><nlm:aff id="aff2"><addr-line>The First Hospital of Shanxi Medical University, Shanxi, P. R. China</addr-line></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The First Hospital of Shanxi Medical University, Shanxi</wicri:regionArea><wicri:noRegion>Shanxi</wicri:noRegion></affiliation></author><author><name sortKey="Wang, Xiaoliang" sort="Wang, Xiaoliang" uniqKey="Wang X" first="Xiaoliang" last="Wang">Xiaoliang Wang</name><affiliation wicri:level="1"><nlm:aff id="aff3"><addr-line>School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai, P. R. China</addr-line></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai</wicri:regionArea><wicri:noRegion>Shanghai</wicri:noRegion></affiliation></author><author><name sortKey="Wu, Qiang" sort="Wu, Qiang" uniqKey="Wu Q" first="Qiang" last="Wu">Qiang Wu</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, P. R. China</addr-line></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai</wicri:regionArea><wicri:noRegion>Shanghai</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">23554982</idno><idno type="pmc">3598664</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3598664</idno><idno type="RBID">PMC:3598664</idno><idno type="doi">10.1371/journal.pone.0059109</idno><date when="2013">2013</date><idno type="wicri:Area/Pmc/Corpus">002263</idno><idno type="wicri:Area/Pmc/Curation">002263</idno><idno type="wicri:Area/Pmc/Checkpoint">001207</idno><idno type="wicri:Area/Ncbi/Merge">002618</idno><idno type="wicri:Area/Ncbi/Curation">002618</idno><idno type="wicri:Area/Ncbi/Checkpoint">002618</idno><idno type="wicri:Area/Main/Merge">001B30</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">IOL Tilt and Decentration Estimation from 3 Dimensional Reconstruction of OCT Image</title><author><name sortKey="Wang, Xiaogang" sort="Wang, Xiaogang" uniqKey="Wang X" first="Xiaogang" last="Wang">Xiaogang Wang</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, P. R. China</addr-line></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai</wicri:regionArea><wicri:noRegion>Shanghai</wicri:noRegion></affiliation></author><author><name sortKey="Dong, Jing" sort="Dong, Jing" uniqKey="Dong J" first="Jing" last="Dong">Jing Dong</name><affiliation wicri:level="1"><nlm:aff id="aff2"><addr-line>The First Hospital of Shanxi Medical University, Shanxi, P. R. China</addr-line></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The First Hospital of Shanxi Medical University, Shanxi</wicri:regionArea><wicri:noRegion>Shanxi</wicri:noRegion></affiliation></author><author><name sortKey="Wang, Xiaoliang" sort="Wang, Xiaoliang" uniqKey="Wang X" first="Xiaoliang" last="Wang">Xiaoliang Wang</name><affiliation wicri:level="1"><nlm:aff id="aff3"><addr-line>School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai, P. R. China</addr-line></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai</wicri:regionArea><wicri:noRegion>Shanghai</wicri:noRegion></affiliation></author><author><name sortKey="Wu, Qiang" sort="Wu, Qiang" uniqKey="Wu Q" first="Qiang" last="Wu">Qiang Wu</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, P. R. China</addr-line></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai</wicri:regionArea><wicri:noRegion>Shanghai</wicri:noRegion></affiliation></author></analytic><series><title level="j">PLoS ONE</title><idno type="eISSN">1932-6203</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Purpose</title><p>To evaluate intraocular lens (IOL) tilt and decentration by anterior segment optical coherence tomography (AS-OCT) using 3-dimensional (3D) reconstruction method.</p></sec><sec><title>Design</title><p>Prospective observational case series.</p></sec><sec><title>Participants</title><p>Thirty-nine patients (39 eyes) were included.</p></sec><sec><title>Methods</title><p>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.</p></sec><sec><title>Main Outcome Measures</title><p>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.</p></sec><sec><title>Results</title><p>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, <italic>P</italic><0.001). There was no significant correlation between the postoperative best corrected visual acuity (BCVA) and the ORA (r = 0.156; <italic>P</italic> = 0.344), total astigmatism (r = 0.012; <italic>P</italic> = 0.942), tilted angle (θ; r = 0.172; <italic>P</italic> = 0.295) or decentration distance (dx: r = 0.191, <italic>P</italic> = 0.244; dy: r = 0.253, <italic>P</italic> = 0.121; ds: r = 0.298, <italic>P</italic> = 0.065).</p></sec><sec><title>Conclusions</title><p>AS-OCT can be used as an alternative for the analysis of IOL tilt and decentration using 3D-reconstruction.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Baumeister, M" uniqKey="Baumeister M">M Baumeister</name></author><author><name sortKey="Buhren, J" uniqKey="Buhren J">J Buhren</name></author><author><name sortKey="Kohnen, T" uniqKey="Kohnen T">T Kohnen</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Oshika, T" uniqKey="Oshika 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