Visual field defects due to optic nerve compression by mass lesions.
D001932:Brain Neoplasms / Q000150:complications*; D004194:Disease; D005123:Eye; D006801:Humans; D009369:Neoplasms; D009900:Optic Nerve; D009901:Optic Nerve Diseases; D009915:Orbit; D012607:Scotoma / Q000209:etiology*; D014794:Visual Fields
BRAIN NEOPLASMS/complications; NERVES, OPTIC/diseases; ORBIT/neoplasms; SCOTOMA/etiology and pathogenesis