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. 2023 Sep 29;13:16379. doi: 10.1038/s41598-023-43518-8

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© The Author(s) 2023

Open Access This 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/.

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Choroidal parameters in the eyes of iNPH patients before and after shunt surgery. (A) Sub-foveal choroidal thickness (SFCT) was not significantly different before surgery (n = 10), and after surgery (n = 10) (281 ± 51.53 μm vs. 287 ± 42.80 μm, p = 0.223). (b) Choroidal vascular index (CVI) was not significantly different before surgery and after surgery (66.7% ± 1.51 vs. 65.5% ± 2.05, p = 0.107). (C) Total choroidal area (TCA), luminal choroidal area (LCA), and stromal choroidal area (SCA) were not significantly different before and after surgery (2.39 ± 0.44 vs. 2.45 ± 0.44 mm², p = 0.676; 1.59 ± 0.28 vs. 1.61 ± 0.30 mm², p = 0.885; 0.801 ± 0.16 vs. 0.845 ± 0.14 mm², p = 0.245 respectively).