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Fundus images of a myopic patient in 2012 and 2016. (a,c) are the fundus images taken by Cannon cameras of different models in 2012 and 2016, respectively. (b,d) are the labeled versions of (a,c), respectively, and show the regions of the atrophic arc highlighted in yellow. The areas of the atrophic arc regions are 17,586 px and 16,521 px in (b,d), respectively.
