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. 2019 Nov 12;9:16590. doi: 10.1038/s41598-019-53091-8

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© The Author(s) 2019

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Examples of surgical phase extraction. (The video was the same as one used in Fig. 4). “Truth” represents the results identified by an ophthalmologist, and “Determination” represents the results recognized by the proposed method. The horizontal axis indicates the elapsed time on surgery. Colors red, blue, and green represent CCC, nuclear extraction, and others, respectively. The graphs indicate that the start and end times of all phases are accurate within a practical range.