Parts A, C, and D courtesy of Raymond Douglas, MD; part B courtesy of Roger A. Dailey, MD.
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Oculoplastics/Orbit
Optic nerve glioma. A, Right optic nerve glioma. The patient has severe proptosis with exposure and light perception vision. B, Funduscopic view. Note swollen optic nerve head with obscured margins. C, T2-weighted axial MRI shows glioma extending into the optic canal. D, MRI shows a heterogeneous mass (arrows) in the apex of the orbit.