<prompt> Optic nerve glioma is associated with-Sturge Weber SyndromeNeurofibromatosis IVKH SyndromeVon Hippel Lindau Syndrome  <response>: Ans. is b i.e., Neurofibromatosis I Optic nerve glioma astrocytoma is the most common intrinsic tumor of the optic nerve. Most common type of optic nerve glioma is juvenile pilocytic astrocytoma. The majority of optic nerve gliomas are of astrocytic origin. However, a few rare optic nerve gliomas arise from oligodendrocytes. 70 of optic gliomas occur during first decade of life. Optic nerve gliomas are associated with Neurofibromatosis-1 Von Recklinghausens disease in 55 of cases. 75 of optic gliomas arise from optic chiasma and adjacent optic nerve. 25 are confined to optic nerve alone orbital optic nerve glioma. 