Book chapter
Optic Disc
Ischemic Optic Neuropathies, pp.131-143
Springer Berlin Heidelberg
05/12/2011
DOI: 10.1007/978-3-642-11852-4_7
Abstract
In the literature, the ophthalmoscopic term “optic disc” has been applied interchangeably to either the whole or a part of the most anterior part of the optic nerve head (i.e., the surface nerve fiber layer and the prelaminar region). Similarly the term “papilla” has been used as a synonym for the optic disc or optic nerve head. The term “papilla” was coined by Briggs in 1676, based on an erroneous impression that the normal optic nerve head was elevated like a papilla (see Chap. 2). Since the structure usually is not elevated above the level of the adjacent retina but lies flat in the same plane as the retina and has a central depression (i.e., the physiological cup), the term “papilla” is a misnomer. It must, however, be conceded that the appearance of the optic nerve head shows considerable variations, all of which may be “within physiological limits”. In reviews of work by other authors, it is not clear how much of the optic nerve head has been included by them under the term “optic disc”.
Details
- Title: Subtitle
- Optic Disc
- Creators
- Jost B Jonas - Department of Ophthalmology and Eye Hospital, The Medical Faculty Mannheim of the Ruprecht-Karls-University Heidelberg, Heidelberg, GermanySohan Singh Hayreh - University of Iowa
- Resource Type
- Book chapter
- Publication Details
- Ischemic Optic Neuropathies, pp.131-143
- DOI
- 10.1007/978-3-642-11852-4_7
- Publisher
- Springer Berlin Heidelberg; Berlin, Heidelberg
- Language
- English
- Date published
- 05/12/2011
- Academic Unit
- Ophthalmology and Visual Sciences
- Record Identifier
- 9984182762502771
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