Optic Nerve Meningiomas are benign tumors on along the optic nerve. They can be on the outside of the nerve or in between the arachnoid and dura layers of the nerve. They are not uniformly shaped, but will wrap around the nerve. This causes problems because removing the tumor surgically can damage the optic nerve. Symptoms of an optic nerve meningioma usually involves vision loss. Radiation therapy can also be used to treat these tumors, but there is the risk of radiation damage to the eyes and surrounding neural tissues.
The black arrows in these images show optic nerve meningiomas.
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