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Digital Image Processing for OphthalmologyIntroduction

Digital Image Processing for Ophthalmology: Introduction CHAP TER 1 1.1 DIAGNOSTIC IMAGING OF THE EYE 1.1.1 ANATOMY AND PHYSIOLOGY OF THE EYE A major portion of the information acquired and processed by a human being is through the eyes and the visual system. The eye consists of three concentric layers [1]. The outermost fibrous sclera is opaque and accounts for five sixths of the globe of the eye. The sclera continues anteriorly into the transparent cornea. The middle vascular coat or uveal tract is made up of the choroid, ciliary body, and iris. The choroid is a highly vascularized structure, accounting for 80% the total ocular blood flow. The innermost layer is the light-sensitive retina, where light energy, focused by the lens, is transformed into neural signals, which are transmitted to the brain along the optic nerve through the optic nerve head (ONH) or optic disc. The central retinal vein and artery enter the eye within the trunk of the optic nerve through the ONH. The retina is a thin layer of neural cells that lines the back of the eyeball of vertebrates and some cephalopods. In vertebrate embryonic development, the retina and the optic nerve originate from outgrowths of the developing brain. Hence, the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Digital Image Processing for OphthalmologyIntroduction

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Publisher
Springer International Publishing
Copyright
© Springer Nature Switzerland AG 2011
ISBN
978-3-031-00521-3
Pages
1 –7
DOI
10.1007/978-3-031-01649-3_1
Publisher site
See Chapter on Publisher Site

Abstract

CHAP TER 1 1.1 DIAGNOSTIC IMAGING OF THE EYE 1.1.1 ANATOMY AND PHYSIOLOGY OF THE EYE A major portion of the information acquired and processed by a human being is through the eyes and the visual system. The eye consists of three concentric layers [1]. The outermost fibrous sclera is opaque and accounts for five sixths of the globe of the eye. The sclera continues anteriorly into the transparent cornea. The middle vascular coat or uveal tract is made up of the choroid, ciliary body, and iris. The choroid is a highly vascularized structure, accounting for 80% the total ocular blood flow. The innermost layer is the light-sensitive retina, where light energy, focused by the lens, is transformed into neural signals, which are transmitted to the brain along the optic nerve through the optic nerve head (ONH) or optic disc. The central retinal vein and artery enter the eye within the trunk of the optic nerve through the ONH. The retina is a thin layer of neural cells that lines the back of the eyeball of vertebrates and some cephalopods. In vertebrate embryonic development, the retina and the optic nerve originate from outgrowths of the developing brain. Hence, the

Published: Jan 1, 2011

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