Tumours, masses and neoplasia
Optic nerve glioma
Low-grade astrocytic tumour (technically also a hamartoma)
Juvenile (good prognosis) and adult (poor prognosis) forms
50% affect the orbital portion of the nerve, causing
- Proptosis: axial
- Optic disc swelling
- Strabismus
- Visual loss
50% do not grow but the remainder do…