Intraorbital implantation of a stimulating electrode for an optic nerve visual prosthesis. Case report

Journal of Neurosurgery
Mårten E BrelénJean Delbeke

Abstract

Research into visual prosthetics is expected to revolutionize the treatment of blind patients with incurable outer retinal degenerative disease. Substantial evidence shows that useful visual sensations can be produced by controlled electrical stimulation of the optic nerve. To make the optic nerve visual prosthesis more acceptable, implantation techniques safer and less invasive than those previously used have been developed. A medial transconjunctival approach is now used to implant a stimulating electrode around the intraorbital section of the optic nerve. This new technique allows sufficient exposure of the nerve after detaching only one rectus muscle and performing a lateral canthotomy. Previously, an electrode was implanted in the intracranial part of the optic nerve, which required more invasive surgery. The new technique was first developed in cadavers and in patients undergoing eye enucleations. Finally, a 68-year-old blind man suffering from retinitis pigmentosa underwent long-term implantation. In this case report the authors describe the technique and outline some of the challenges involved.

References

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Citations

Sep 10, 2013·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Jingjing SunLiming Li
Mar 17, 2011·Documenta Ophthalmologica. Advances in Ophthalmology·Mitja Benedičič, Roman Bošnjak
Feb 28, 2008·Nature Clinical Practice. Neurology·William C Stacey, Brian Litt
Jul 17, 2010·Artificial Organs·Iyad ObeidJean Delbeke
Jul 3, 2009·Neurosurgical Focus·John S Pezaris, Emad N Eskandar
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Aug 21, 2019·Nature Biomedical Engineering·Vivien GailletDiego Ghezzi
Jul 24, 2020·Current Ophthalmology Reports·Victor Wang, Ajay E Kuriyan
Jun 7, 2019·Military Medical Research·Rebecca M Mirochnik, John S Pezaris

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Methods Mentioned

BETA
cochlear implants
dissection

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