Optic Atrophy
Primary optic atrophy:
• It is optic atrophy that develops without swelling of the optic nerve head.
• It develops in lesions affecting areas from the retrolaminar region to the lateral geniculate body.
• The disc is white. It's not fluffy. Boundaries are sharp.
• Causes: Optic neuritis, tumor or aneurysm compression, hereditary optic neuropathies, trauma.
Secondary optic atrophy:
• It is optic atrophy that develops after a long period of swelling at the optic nerve head.
• The optic disc is white or off-grey and slightly raised. Its borders are blurred due to gliosis.
• Causes: Chronic papilledema, anterior ischemic optic neuropathy and papillitis
Optic Nerve Tumors
0 Primary tumors are most commonly gliomas and optic nerve sheath meningiomas.
There is optic atrophy and enlargement of the optic canal.