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The eye position and MRI in Subject 02. A Eye position demonstrated ptosis, esotropia, and hypoplasia. B Coronal MRI showed atrophy of the left SR muscle (white asterisk). C Axial MRI showed the LR muscle of the left eye had a string-like configuration, which suggested muscle fibrosis the hypoplasia (yellow asterisk). MRI, magnetic resonance imaging; SR, superior rectus. LR, lateral rectus. MR, medial rectus. IR, inferior rectus. SO, superior oblique. ON, optic nerve
