case_images: PMC7652624_01
case_images: The patient's eye movement examination. The examination revealed overelevation of the right eye in adduction and restriction in the superior oblique muscle direction of the right eye, whereas movements of the left eye were almost normal.
case_images: CRIOPM2020-8829655.001.jpg
case_images: PMC7652624_01_CRIOPM2020-8829655.001.jpg
case_images: fig1
case_images: Eye movement examination revealed overelevation of the right eye in adduction and restriction in the superior oblique muscle direction of the right eye, with almost normal movements in the left eye (Figure 1).
case_images: Magnetic resonance imaging (MRI) scans of the patient. The images showed a slight enlargement of the superior oblique muscle of the left eye (red arrow); however, neither enlargement nor abnormal signals were seen in the other four extraocular rectus muscles in either eye: (a) axial T1-weighted image, (b) axial T2-weighted image, (c) coronal T1-weighted image, and (d) coronal Short Tau Inversion Recovery (STIR) image.
case_images: CRIOPM2020-8829655.002.jpg
case_images: PMC7652624_01_CRIOPM2020-8829655.002.jpg
case_images: fig2
case_images: MRI showed a slight enlargement of the superior oblique muscle of the left eye, but neither enlargement nor abnormal signal of the four extraocular rectus muscles was seen in either eye (Figure 2).
case_images: Clinical photograph of the patient at her last visit. Her eye position had improved.
case_images: CRIOPM2020-8829655.003.jpg
case_images: PMC7652624_01_CRIOPM2020-8829655.003.jpg
case_images: fig3
case_images: Four months after the operation, the patient transferred from our hospital to a hospital outside the prefecture, because of relocation, but diplopia and abnormal eye position had improved at the final visit (Figure 3).