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Chapter-55 Optic Nerve Avulsion

BOOK TITLE: Retina: Medical and Surgical Management

Author
1. Sen Sagnik
2. Mutha Vineet
3. MB Thirumalesh
4. Sheemar Abhishek
ISBN
9789352702947
DOI
10.5005/jp/books/18054_56
Edition
1/e
Publishing Year
2018
Pages
2
Author Affiliations
1. Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India, All India Institute of Medical Sciences, New Delhi, India
2. Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India, All India Institute of Medical Sciences, New Delhi, India
3. Narayana Nethralaya, Bengaluru, Karnataka, India, Bengaluru, Karnataka, India
4. Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India, All India Institute of Medical Sciences, New Delhi, India
Chapter keywords
Optic nerve avulsion, ocular trauma, slower traumatic avulsion injury, massive gunshot injury, vitreous hemorrhage, intraocular pressure, IOP, CT

Abstract

Optic nerve avulsion is a rare manifestation of ocular trauma. Usually the patient presents with sudden and complete loss of vision following severe blunt trauma due to separation of the optic nerve from the globe. However, it has also been reported with less severe blunt trauma. Jameson Evans in his review on optic nerve injuries in 1909 had described slower traumatic avulsion injuries in which the optic nerve had separated from the globe and cases where massive gunshot injuries to the orbit spared the eye but the nerve was completely separated. Vitreous hemorrhage usually obscures the presence of optic nerve avulsion. Otherwise it is quite apparent on fundus examination.

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