The Ocular Circulation
The Ocular Circulation

Author: Jeffrey W. Kiel

Publisher: Biota Publishing

Published: 2011-02-01

Total Pages: 83

ISBN-13: 1615041699

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This presentation describes the unique anatomy and physiology of the vascular beds that serve the eye. The needs for an unobstructed light path from the cornea to the retina and a relatively fixed corneal curvature and distance between refractive structures pose significant challenges for the vasculature to provide nutrients and remove metabolic waste. To meet these needs, the ocular vascular beds are confined to the periphery of the posterior two thirds of the eye and a surrogate circulation provides a continuous flow of aqueous humor to nourish the avascular cornea, lens and vitreous compartment. The production of aqueous humor (and its ease of egress from the eye) also generates the intraocular pressure (IOP), which maintains the shape of the eye. However, the IOP also exerts a compressing force on the ocular blood vessels that is higher than elsewhere in the body. This is particularly true for the intraocular veins, which must have a pressure higher than IOP to remain patent, and so the IOP is the effective venous pressure for the intraocular vascular beds. Consequently, the ocular circulation operates at a lower perfusion pressure gradient than elsewhere in the body and is more at risk for ischemic damage when faced with low arterial pressure, particularly if IOP is elevated. This risk and the specialized tissues of the eye give rise to the fascinating physiology of the ocular circulations.

Handbook of Vascular Biometrics
Handbook of Vascular Biometrics

Author: Andreas Uhl

Publisher: Springer Nature

Published: 2019-11-14

Total Pages: 535

ISBN-13: 3030277313

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This open access handbook provides the first comprehensive overview of biometrics exploiting the shape of human blood vessels for biometric recognition, i.e. vascular biometrics, including finger vein recognition, hand/palm vein recognition, retina recognition, and sclera recognition. After an introductory chapter summarizing the state of the art in and availability of commercial systems and open datasets/open source software, individual chapters focus on specific aspects of one of the biometric modalities, including questions of usability, security, and privacy. The book features contributions from both academia and major industrial manufacturers.

Pathologic Myopia
Pathologic Myopia

Author: Richard F. Spaide

Publisher: Springer Nature

Published: 2021-07-28

Total Pages: 461

ISBN-13: 3030743349

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Pathologic Myopia is a major cause of severe vision loss worldwide. The mechanisms for vision loss include cataract, glaucoma, retinal detachment, and above all, myopic maculopathy within the posterior staphyloma. The first edition of Pathologic Myopia is one of the only current books to specifically address this disease and discusses recent developments in imaging technologies and various approaches to treatments, such as laser photocoagulation, photodynamic therapy, pharmaco-therapeutic injections in the vitreous, and surgery. This new edition is a timely update to the standard reference in the field, with new chapters on advanced refractive error correction, genetics, developing a classification system, and special surgical approaches for pathologic myopia. Complete with even more high-quality color images and informative tables, this book is written and edited by leaders in the field and is geared towards ophthalmologists, including residents and fellows in training, glaucoma and cataract specialists, and vitreoretinal macula experts.

High Resolution Imaging in Microscopy and Ophthalmology
High Resolution Imaging in Microscopy and Ophthalmology

Author: Josef F. Bille

Publisher: Springer

Published: 2019-08-13

Total Pages: 411

ISBN-13: 3030166384

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This open access book provides a comprehensive overview of the application of the newest laser and microscope/ophthalmoscope technology in the field of high resolution imaging in microscopy and ophthalmology. Starting by describing High-Resolution 3D Light Microscopy with STED and RESOLFT, the book goes on to cover retinal and anterior segment imaging and image-guided treatment and also discusses the development of adaptive optics in vision science and ophthalmology. Using an interdisciplinary approach, the reader will learn about the latest developments and most up to date technology in the field and how these translate to a medical setting. High Resolution Imaging in Microscopy and Ophthalmology – New Frontiers in Biomedical Optics has been written by leading experts in the field and offers insights on engineering, biology, and medicine, thus being a valuable addition for scientists, engineers, and clinicians with technical and medical interest who would like to understand the equipment, the applications and the medical/biological background. Lastly, this book is dedicated to the memory of Dr. Gerhard Zinser, co-founder of Heidelberg Engineering GmbH, a scientist, a husband, a brother, a colleague, and a friend.

Principles and Practice of Clinical Electrophysiology of Vision, second edition
Principles and Practice of Clinical Electrophysiology of Vision, second edition

Author: John R. Heckenlively

Publisher: MIT Press

Published: 2006-04-07

Total Pages: 1033

ISBN-13: 0262083469

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The long-awaited second edition of an authoritative reference on electrophysiologic vision testing, including detailed information on techniques and problems, basic physiology and anatomy, theoretical concepts, and clinical findings; with extensive new material. This authoritative text is the only comprehensive reference available on electrophysiologic vision testing, offering both practical information on techniques and problems as well as basic physiology and anatomy, theoretical concepts, and clinical correlations. The second edition, of the widely used text, offers extensive new material and updated information: 65 of the 84 chapters are completely new, with the changes reflecting recent advances in the field. The book will continue to be an essential resource for practitioners and scholars from a range of disciplines within vision science. The contributions not only cover new information—important material that is likely to become more important in the next decade—but also offer a long-range perspective on the field and its remarkable development in the last century. After discussing the history and background of clinical electrophysiology, the book introduces the anatomy of the retina and principles of cell biology in the visual pathways at the molecular, physiological, and biochemical levels. It relates these new findings to the techniques and interpretations of clinical tests, including the electro-oculogram (EOG), electroretinogram (ERG), and visual evoked potentials (VEP), which are discussed in detail, as are equipment, data acquisition and analysis, principles and protocols for clinical testing, diseases and dysfunction, and animal testing. Notable additions for this edition include chapters on the origin of electroretinogram waveforms, multifocal techniques, testing in standard laboratory animals, recent advances in analysis of abnormalities in disease, and the applications of these techniques to the study of genetic abnormalities.

Intraocular Inflammation
Intraocular Inflammation

Author: Manfred Zierhut

Publisher: Springer

Published: 2016-01-12

Total Pages: 1530

ISBN-13: 3540753877

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This well-structured and lavishly illustrated book is a comprehensive reference on intraocular inflammation that encompasses all anatomic forms, settings and etiologies. Individual sections are devoted to uveitis associated with systemic disorders, uveitis syndromes restricted to the eye, bacterial uveitis, viral uveitis, fungal uveitis, parasitic uveitis, uveitis caused by other microbes, traumatic uveitis, and masquerade syndromes. Chapters on the different forms of uveitis are in a homogeneous reader-friendly format, with identification of core messages, explanation of etiology and pathogenesis, up-to-date information on diagnostics and differential diagnosis and guidance on the most appropriate forms of treatment and prognosis. Helpful flow charts are included to assist in identification of potential underlying disorders and the reader will also have online access to one hundred informative case reports demonstrating the different courses of intraocular inflammation. The authors are world experts keen to share their vast experience with the reader. Intraocular Inflammation will be a valuable resource for all physicians who deal with patients with inflammatory eye disease.

Optical Coherence Tomography in Neurologic Diseases
Optical Coherence Tomography in Neurologic Diseases

Author: Peter A. Calabresi

Publisher: Cambridge University Press

Published: 2015-05-14

Total Pages: 235

ISBN-13: 1107041309

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The first comprehensive review of the use of optical coherence tomography in neurological diseases for neurologists, neuro-ophthalmologists, and neuroradiologists.

Ocular Pathology
Ocular Pathology

Author: Myron Yanoff

Publisher:

Published: 2002

Total Pages: 792

ISBN-13:

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The new, 5th Edition of the premier ocular pathology resource offers the latest information in the field. Over 2095 illustrations *1800 in full color* from the authors' collections represent one of the finest compilations of rare and unusual ocular conditions available. Comprehensive, yet concise, it explores new topics such as complications of corneal surgery, vascular disorders, secondary cataracts, bone-marrow transplant retinopathy, neural retinal detachment, ocular melanotic tumors, and more. Plus, a companion CD-ROM and text/CD-ROM package are available! Explores new topics such as complications of corneal surgery, vascular disorders, secondary cataracts, bone-marrow transplant retinopathy, neural retinal detachment, and ocular melanotic tumors (including diabetes). Offers expanded coverage of entities such as chromosome 17 deletion syndrome, necrobiotic xanthogranuloma, climatic protoglycan stromal keratopathy, unilateral acute idiopathic maculopathy, acute mutifocal retinitis, idiopathic polypoidal choroidal vasculopathy, North Carolina macular dystrophy, familial internal limiting membrane dystrophy, clumped pigmentary retinal dystrophy (clumped pigmentary retinal degeneration), vasoproliferative retinal tumors, Schwartz's syndrome, familial amyloidotic polyneuropathy, familial atypical mole and melanoma (FAM-M) syndrome, and more! Features specific genetic profiles for many existing entities.