Symptoms of Optic Nerve Sheath Meningioma

The most common presenting symptom is progressive loss of vision or visual field. Other symptoms include blind spots (scotomas), decrease in color vision, transient vision loss in different gazes. Eye bulging, lid edema, and limitation of eye movements can also occur. Less common and non-specific complaints include orbital pain and headaches, which have been reported in 2–50% of patients with ONSM.