Visual results after microsurgical removal of meningiomas involving the anterior visual system

Visual results were evaluated in 20 patients after microsurgical removal of intracranial meningiomas that had produced visual loss from damage to the anterior visual system. Patients were evaluated preoperatively, immediately postoperatively, and several months to years after surgery. Visual acuity either improved or remained normal in 68.75% (22/32) of eyes examined and worsened in 25% (8/32) of eyes examined. Visual field changes generally paralleled visual acuity changes. Visual results were most closely related to duration of visual symptoms and not to either tumor size or preoperative visual findings.