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Figure 5: Magnetic resonance imaging T2 weighted sagittal image left (a) and right (b) eye showing tortuous optic nerve, coronal image (c) of the same patient showing halo sign (increased CSF space around the nerve) marked with black arrow, and coronal computed tomography image (d) of the same patient showing concae bullosa

Figure 5: Magnetic resonance imaging T2 weighted sagittal image left (a) and right (b) eye showing tortuous optic nerve, coronal image (c) of the same patient showing halo sign (increased CSF space around the nerve) marked with black arrow, and coronal computed tomography image (d) of the same patient showing concae bullosa