Related Experiment Video
Updated: Aug 4, 2026

Optic Nerve Transection: A Model of Adult Neuron Apoptosis in the Central Nervous System
Published on: May 12, 2011
Removal of an intraocular foreign body from the optic nerve head
Abstract:
A 29-year-old man sustained a metallic (98% iron) foreign body in the optic nerve head, which resulted in a massive vitreous hemorrhage and a secondary branch retinal artery occlusion. An initial pars plana vitrectomy was successful in removing the vitreous hemorrhage, but numerous attempts with pars plana and intravitreal electromagnets failed to dislodge the foreign body. A second operation using a microscalpel and foreign body forceps with the bimanual pars plana technique was successful in removing the steel foreign body from the optic nerve-head.
Related Concept Videos
Glaucoma: Overview
Angle Closure Glaucoma: Treatment

