Endoscopic endonasal surgery for optic nerve sheath and optic canal meningiomas: 2D operative video.

Meningiomas invading the ventromedial optic canal are uncommon anterior cranial fossa tumors that present with progressive visual decline. Their close relationship with the optic nerve and ophthalmic artery makes surgical intervention highly complex. This video presents two illustrative cases-an optic nerve sheath meningioma and an optic canal meningioma-both treated using an endoscopic endonasal approach (EEA). This direct ventral corridor provides early optic canal decompression and panoramic visualization of critical neurovascular structures, avoiding optic nerve manipulation. The same technique was employed in both cases, but was tailored to the distinct surgical challenges of optic nerve sheath and optic canal meningiomas. The video can be found here: https://stream.cadmore.media/r10.3171/2025.10.FOCVID25196.