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Effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens
BACKGROUND: To investigate the effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens (ICL V4c). METHODS: This observational study recruited 62 eyes of 31 myopia patients underwent ICL V4c implantation. Anterior segment optical coherenc...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9635130/ https://www.ncbi.nlm.nih.gov/pubmed/36329521 http://dx.doi.org/10.1186/s40662-022-00313-2 |
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author | Niu, Lingling Zhang, Zhe Miao, Huamao Zhao, Jing Wang, Xiaoying He, Ji C. Zhou, Xingtao |
author_facet | Niu, Lingling Zhang, Zhe Miao, Huamao Zhao, Jing Wang, Xiaoying He, Ji C. Zhou, Xingtao |
author_sort | Niu, Lingling |
collection | PubMed |
description | BACKGROUND: To investigate the effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens (ICL V4c). METHODS: This observational study recruited 62 eyes of 31 myopia patients underwent ICL V4c implantation. Anterior segment optical coherence tomography (AS-OCT) assessed the anterior chamber depth (ACD), ACD-ICL (distance from the corneal endothelium to anterior surface of the ICL V4c), vault (distance between the posterior ICL V4c surface and anterior crystalline lens surface), and crystalline lens tilt under various lighting conditions and accommodation relative to the corneal topographic axis at one year after ICL V4c implantation. Baseline was defined as the scotopic condition, which was also the non-accommodative stimulus condition. The ICL V4c tilt was analyzed using MATLAB. The significance level was set at P < 0.05. RESULTS: The ACD-ICL values were similar under various lighting conditions (P = 0.978) but decreased during accommodation (P < 0.001). The vault was significantly smaller under mesopic and photopic conditions than the baseline (P = 0.044 and P < 0.001, respectively) but remained unchanged during accommodation (P = 0.058). The inferotemporal proportion of ICL V4c (88.7%, 55 eyes) and crystalline lens (74.2%, 46 eyes) tilts were not significantly different (P = 0.063). Crystalline lens under various lighting conditions and accommodation exhibited similar tilts. The vertical tilt of ICL V4c was significantly larger under photopic conditions than the baseline (P = 0.038). The horizontal and total tilts were significantly decreased during accommodation (P = 0.043 and 0.013, respectively). CONCLUSIONS: The axial position of ICL V4c in the anterior chamber was stable under various lighting conditions. Lighting conditions and accommodation may influence vertical, horizontal and total tilts of ICL V4c. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s40662-022-00313-2. |
format | Online Article Text |
id | pubmed-9635130 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-96351302022-11-05 Effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens Niu, Lingling Zhang, Zhe Miao, Huamao Zhao, Jing Wang, Xiaoying He, Ji C. Zhou, Xingtao Eye Vis (Lond) Research BACKGROUND: To investigate the effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens (ICL V4c). METHODS: This observational study recruited 62 eyes of 31 myopia patients underwent ICL V4c implantation. Anterior segment optical coherence tomography (AS-OCT) assessed the anterior chamber depth (ACD), ACD-ICL (distance from the corneal endothelium to anterior surface of the ICL V4c), vault (distance between the posterior ICL V4c surface and anterior crystalline lens surface), and crystalline lens tilt under various lighting conditions and accommodation relative to the corneal topographic axis at one year after ICL V4c implantation. Baseline was defined as the scotopic condition, which was also the non-accommodative stimulus condition. The ICL V4c tilt was analyzed using MATLAB. The significance level was set at P < 0.05. RESULTS: The ACD-ICL values were similar under various lighting conditions (P = 0.978) but decreased during accommodation (P < 0.001). The vault was significantly smaller under mesopic and photopic conditions than the baseline (P = 0.044 and P < 0.001, respectively) but remained unchanged during accommodation (P = 0.058). The inferotemporal proportion of ICL V4c (88.7%, 55 eyes) and crystalline lens (74.2%, 46 eyes) tilts were not significantly different (P = 0.063). Crystalline lens under various lighting conditions and accommodation exhibited similar tilts. The vertical tilt of ICL V4c was significantly larger under photopic conditions than the baseline (P = 0.038). The horizontal and total tilts were significantly decreased during accommodation (P = 0.043 and 0.013, respectively). CONCLUSIONS: The axial position of ICL V4c in the anterior chamber was stable under various lighting conditions. Lighting conditions and accommodation may influence vertical, horizontal and total tilts of ICL V4c. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s40662-022-00313-2. BioMed Central 2022-11-04 /pmc/articles/PMC9635130/ /pubmed/36329521 http://dx.doi.org/10.1186/s40662-022-00313-2 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Research Niu, Lingling Zhang, Zhe Miao, Huamao Zhao, Jing Wang, Xiaoying He, Ji C. Zhou, Xingtao Effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens |
title | Effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens |
title_full | Effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens |
title_fullStr | Effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens |
title_full_unstemmed | Effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens |
title_short | Effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens |
title_sort | effects of lighting conditions and accommodation on the three-dimensional position of visian implantable collamer lens |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9635130/ https://www.ncbi.nlm.nih.gov/pubmed/36329521 http://dx.doi.org/10.1186/s40662-022-00313-2 |
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