About 1–2% of all<unk> s are<unk> s.<unk> s have an incidence of ~4.18/100,000 persons each year. Thus, ~10,000<unk> s are diagnosed in the US each year; corresponding to ~100 cases of<unk>  each year in the US. The actual number of<unk> s is likely much higher as it is very common in elderly women.<unk>  comprises about 2% of orbital tumors, and about 10% of optic nerve lesions. Neurofibromatosis type II (NF-2) affects around 9% of<unk>  patients, where the incidence in the general population is around 0.03–0.05%. Thus NF-2 is felt to be a risk factor for the development of<unk> .
Optic nerve sheath meningioma
Optic nerve glioma
Intraocular schwannoma
Optic nerve tumor
Vestibular schwannoma
Labyrinthine fistula
Intraocular lymphoma
Coloboma of optic nerve