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. 2021 Oct 12;42(3):855–862. doi: 10.1007/s10792-021-02051-1

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© The Author(s) 2021

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Fig. 2 — Coronal MRI pictures of the four groups. NC group showed no abnormal muscles. a NDON group. b and ANDON group. c showed varying degrees of enlarged extraocular muscles. DON group showed enlarged extraocular muscles and crowded orbital apex (d)