Article Figures & Data
Figures
- Fig 1.
Coronal unenhanced CT scan of the orbits at the level of the ethmoid sinuses demonstrates bilateral accessory extraocular muscles (arrows) medial to the lateral rectus muscles, superior to the inferior rectus muscles, and inferolateral to the optic nerves. Attenuation is similar to that of surrounding extraocular muscles. The structure is much larger on the left side.
- Fig 2.
Axial unenhanced CT scan of the orbits at the level of the greater sphenoid wing demonstrates accessory extraocular muscles (arrows) medial to the lateral rectus muscles and lateral to the optic nerves (not shown on this image) that arise from the orbital apex at the annulus of Zinn and insert directly on the posterior globe, with no bridging connection or assimilation into the surrounding muscles.
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