Tilt and decentration of posterior and anterior iris-claw intraocular lenses: a pilot study using anterior segment optical coherence tomography
Abstract Background Information on the centration and tilt of iris-claw intraocular lenses (IC-IOLs) is limited. In this study, we tested the capacity of an anterior segment optical coherence tomography (AS-OCT) instrument to measure decentration and tilt of anterior and posterior IC-IOLs through an...
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| Format: | Article |
| Language: | English |
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BMC
2022-05-01
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| Series: | BMC Ophthalmology |
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| Online Access: | https://doi.org/10.1186/s12886-022-02430-x |
| _version_ | 1811324756011515904 |
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| author | Giacomo Calzetti Carlo Bellucci Salvatore Antonio Tedesco Maurizio Rossi Stefano Gandolfi Paolo Mora |
| author_facet | Giacomo Calzetti Carlo Bellucci Salvatore Antonio Tedesco Maurizio Rossi Stefano Gandolfi Paolo Mora |
| author_sort | Giacomo Calzetti |
| collection | DOAJ |
| description | Abstract Background Information on the centration and tilt of iris-claw intraocular lenses (IC-IOLs) is limited. In this study, we tested the capacity of an anterior segment optical coherence tomography (AS-OCT) instrument to measure decentration and tilt of anterior and posterior IC-IOLs through an integrated software. Methods The present observational, cross-sectional study was conducted at University Eye Clinic of Parma (Parma, Italy). The CASIA2 swept-source AS-OCT (Tomey Corp.) was used to measure the tilt and decentration of posterior and anterior IC-IOLs in patients implanted at least 6 months in advance. After failure with full-automation, semi-manual IOL tracing was applied. In-the-bag (IB) contralateral IOLs, when present, were measured automatically. The Bland-Altman method was used to evaluate the agreement between repeated measurements (2 images for each study eye). The amount and direction of tilt and decentration were recorded and plotted into polar charts for evaluation. Results A total of 21 patients were included: 14 with posterior and 7 with anterior IC-IOL fixation. In 17 eyes (81%), the AS-OCT provided a repeatable measurement of tilt and decentration. All contralateral eyes with IB IOL were automatically measured. The median decentration was 0.67 mm, 0.24 mm, and 0.24 mm in posterior IC-IOLs, anterior IC-IOLs, and IB IOLs group, respectively. The median tilt was 5.0°, 5.6°, and 5.6° for posterior IC-IOLs, anterior IC-IOLs, and IB IOLs, respectively. Tilt direction was mainly temporal, while decentration was inferior-temporal with posterior IC-IOLs and scattered with anterior IC-IOLs and IB IOLs. Conclusions The semi-manual tracing function of the CASIA2 AS-OCT provides repeatable and affordable measurements of the decentration and tilt of IC-IOLs in both the anterior and posterior chamber. Data from the former group were similar to the IB group. |
| first_indexed | 2024-04-13T14:21:09Z |
| format | Article |
| id | doaj.art-b5585eda73714cbb86000612e6dfb0a6 |
| institution | Directory Open Access Journal |
| issn | 1471-2415 |
| language | English |
| last_indexed | 2024-04-13T14:21:09Z |
| publishDate | 2022-05-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Ophthalmology |
| spelling | doaj.art-b5585eda73714cbb86000612e6dfb0a62022-12-22T02:43:28ZengBMCBMC Ophthalmology1471-24152022-05-012211910.1186/s12886-022-02430-xTilt and decentration of posterior and anterior iris-claw intraocular lenses: a pilot study using anterior segment optical coherence tomographyGiacomo Calzetti0Carlo Bellucci1Salvatore Antonio Tedesco2Maurizio Rossi3Stefano Gandolfi4Paolo Mora5Ophthalmology Unit, University Hospital of ParmaOphthalmology Unit, University Hospital of ParmaOphthalmology Unit, University Hospital of ParmaDepartment of Clinical and Experimental Medicine, University Hospital of ParmaOphthalmology Unit, University Hospital of ParmaOphthalmology Unit, University Hospital of ParmaAbstract Background Information on the centration and tilt of iris-claw intraocular lenses (IC-IOLs) is limited. In this study, we tested the capacity of an anterior segment optical coherence tomography (AS-OCT) instrument to measure decentration and tilt of anterior and posterior IC-IOLs through an integrated software. Methods The present observational, cross-sectional study was conducted at University Eye Clinic of Parma (Parma, Italy). The CASIA2 swept-source AS-OCT (Tomey Corp.) was used to measure the tilt and decentration of posterior and anterior IC-IOLs in patients implanted at least 6 months in advance. After failure with full-automation, semi-manual IOL tracing was applied. In-the-bag (IB) contralateral IOLs, when present, were measured automatically. The Bland-Altman method was used to evaluate the agreement between repeated measurements (2 images for each study eye). The amount and direction of tilt and decentration were recorded and plotted into polar charts for evaluation. Results A total of 21 patients were included: 14 with posterior and 7 with anterior IC-IOL fixation. In 17 eyes (81%), the AS-OCT provided a repeatable measurement of tilt and decentration. All contralateral eyes with IB IOL were automatically measured. The median decentration was 0.67 mm, 0.24 mm, and 0.24 mm in posterior IC-IOLs, anterior IC-IOLs, and IB IOLs group, respectively. The median tilt was 5.0°, 5.6°, and 5.6° for posterior IC-IOLs, anterior IC-IOLs, and IB IOLs, respectively. Tilt direction was mainly temporal, while decentration was inferior-temporal with posterior IC-IOLs and scattered with anterior IC-IOLs and IB IOLs. Conclusions The semi-manual tracing function of the CASIA2 AS-OCT provides repeatable and affordable measurements of the decentration and tilt of IC-IOLs in both the anterior and posterior chamber. Data from the former group were similar to the IB group.https://doi.org/10.1186/s12886-022-02430-xCATARACT SURGERYIRIS-CLAW IOLTILTDECENTRATIONANTERIOR SEGMENT OCT |
| spellingShingle | Giacomo Calzetti Carlo Bellucci Salvatore Antonio Tedesco Maurizio Rossi Stefano Gandolfi Paolo Mora Tilt and decentration of posterior and anterior iris-claw intraocular lenses: a pilot study using anterior segment optical coherence tomography BMC Ophthalmology CATARACT SURGERY IRIS-CLAW IOL TILT DECENTRATION ANTERIOR SEGMENT OCT |
| title | Tilt and decentration of posterior and anterior iris-claw intraocular lenses: a pilot study using anterior segment optical coherence tomography |
| title_full | Tilt and decentration of posterior and anterior iris-claw intraocular lenses: a pilot study using anterior segment optical coherence tomography |
| title_fullStr | Tilt and decentration of posterior and anterior iris-claw intraocular lenses: a pilot study using anterior segment optical coherence tomography |
| title_full_unstemmed | Tilt and decentration of posterior and anterior iris-claw intraocular lenses: a pilot study using anterior segment optical coherence tomography |
| title_short | Tilt and decentration of posterior and anterior iris-claw intraocular lenses: a pilot study using anterior segment optical coherence tomography |
| title_sort | tilt and decentration of posterior and anterior iris claw intraocular lenses a pilot study using anterior segment optical coherence tomography |
| topic | CATARACT SURGERY IRIS-CLAW IOL TILT DECENTRATION ANTERIOR SEGMENT OCT |
| url | https://doi.org/10.1186/s12886-022-02430-x |
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