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Air Puff Tonometers
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Book Synopsis Air-Puff Tonometers: Challenges and Insights by : Robert Koprowski
Download or read book Air-Puff Tonometers: Challenges and Insights written by Robert Koprowski and published by Iph001. This book was released on 2019-04-11 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air-Puff Tonometers presents the latest achievements and research works in the area of intraocular pressure measurement by the air-puff method. This method is used, for example, by the Corvis(R) ST, owing to the ultra-high-speed Scheimpflug camera, which records corneal deformation being the response to an air puff. This book is recommended reading for those involved in the analysis and processing of images and wanting to expand their knowledge of contemporary diagnostic methods and image analysis.
Book Synopsis Air-Puff Tonometers: Challenges and Insights by : Robert Koprowski
Download or read book Air-Puff Tonometers: Challenges and Insights written by Robert Koprowski and published by Institute of Physics Publishing. This book was released on 2019-04-11 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air-Puff Tonometers presents the latest achievements and research works in the area of intraocular pressure measurement by the air-puff method. This method is used, for example, by the Corvis(R) ST, owing to the ultra-high-speed Scheimpflug camera, which records corneal deformation being the response to an air puff. This book is recommended reading for those involved in the analysis and processing of images and wanting to expand their knowledge of contemporary diagnostic methods and image analysis.
Book Synopsis Pearls of Glaucoma Management by : JoAnn A. Giaconi
Download or read book Pearls of Glaucoma Management written by JoAnn A. Giaconi and published by Springer Science & Business Media. This book was released on 2010-03-02 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: If you have ever uttered the commonly expressed lament, “Glaucoma is so confusing!” then this text is for you. You will no longer be bewildered. Why practitioners may be confused about how to be of help to patients with glaucoma – in its many incarnations and reincarnations – is easily understood. The issue seems to be overwhelming when one considers that the already massive popu- tion of those with glaucoma is increasing rapidly as the world’s population increases and ages. During the past 50 years the fundamental defnition of glaucoma has changed almost 180°, and the indications for treatment have become more variable and c- troversial, some advising early therapy and others strongly cautioning against such an approach: Various diagnostic tests have come and gone and are interpreted in such different ways that there seems to be no consensus; surgical techniques come in and out of fashion in perplexing ways. There seems to be a constantly shifting, sandy foundation on which are built unsteady schools of ever-varying advice. Why prac- tioners, patients, and the public are often bewildered is understandable.
Download or read book Ophthalmology written by Pinakin Davey and published by BoD – Books on Demand. This book was released on 2014-09-03 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together both a review and updates in clinical and research areas. The chapters will be of interest to a wide audience. On one hand, the review and update of clinical practices will interest students and residents, on the other, cutting edge research chapters will be of interest to the researchers in the field. The book is divided into four parts: 1) Review and Updates in Diagnostic Testing, 2) Updates in Anterior Segment Diseases, 3) Updates in Posterior Segment Diseases, and 4) Updates in Research in Ophthalmology, Optometry and Vision Science. The chapters are written by experts and individuals with special interests in topics with a focus on clinical application and translational benefit to eye care.
Book Synopsis Diagnosis and Management of Glaucoma by : R Ramakrishan
Download or read book Diagnosis and Management of Glaucoma written by R Ramakrishan and published by JP Medical Ltd. This book was released on 2013-01-30 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glaucoma is an eye disease in which the optic nerve is damaged and can permanently damage vision and lead to blindness if left untreated. This book is a complete guide to the diagnosis and management of glaucoma. Divided into five sections, it begins with an introduction to the disease, continuing step by step through its diagnosis, the different types of glaucoma and treatment options. Authored by specialists renowned in their field based in India and the USA, this manual contains 840 images and illustrations.
Book Synopsis Harwood-Nuss' Clinical Practice of Emergency Medicine by : Allan B. Wolfson
Download or read book Harwood-Nuss' Clinical Practice of Emergency Medicine written by Allan B. Wolfson and published by Lippincott Williams & Wilkins. This book was released on 2012-09-11 with total page 1809 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organized for easy reference, this comprehensive, concise, and clinically focused text covers all aspects of emergency medicine. Chapters follow a consistent, structured format—clinical presentation, differential diagnosis, evaluation, management, and disposition with highlighted critical interventions and common pitfalls. In this edition, the Pain and Pain Management section is now at the front of the book, since a large percentage of emergency department patients present with pain-related complaints. The Trauma section now follows the High-Risk Chief Complaint section. A new two-color design will help readers find critical elements of each chapter easily. A companion Website will include the fully searchable text, more than 400 self-assessment questions with answers, and additional images and tables.
Book Synopsis Human Eye Imaging and Modeling by : E. Y. K. Ng
Download or read book Human Eye Imaging and Modeling written by E. Y. K. Ng and published by CRC Press. This book was released on 2012-06-05 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced image processing and mathematical modeling techniques are increasingly being used for the early diagnosis of eye diseases. A comprehensive review of the field, Human Eye Imaging and Modeling details the latest advances and analytical techniques in ocular imaging and modeling. The first part of the book looks at imaging of the fundus as well as infrared imaging. It begins by exploring developments in the analysis of fundus images, particularly for the diagnosis of diabetic retinopathy and glaucoma. It also reviews anterior segment imaging and reports on developments in ocular thermography, especially the use of thermal imaging as the basis of tear evaporimetry and dry eye diagnosis. The second part of the book delves into mathematical modeling of the human eye. Coverage includes modeling of the eye during retinal laser surgery, a framework for optical simulation, heat distribution using a 3D web-splines solution, and exposure to laser radiation. The text also examines computer simulation of the human eye based on principles of heat transfer, as well as various bioheat equations to predict interior temperatures based on the surface temperature. Featuring contributions by established experts in eye imaging, this is a valuable reference for medical personnel and researchers who want to know more about state-of-the-art computer-based imaging and detection methods. It presents novel imaging and modeling algorithms that can aid in early diagnosis, with the aim of enriching the lives of people suffering from eye abnormalities.
Book Synopsis Becker-Shaffer's Diagnosis and Therapy of the Glaucomas by : Bernard Becker
Download or read book Becker-Shaffer's Diagnosis and Therapy of the Glaucomas written by Bernard Becker and published by . This book was released on 1970 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Keratitis by : Anna Karolina Nowinska
Download or read book Keratitis written by Anna Karolina Nowinska and published by BoD – Books on Demand. This book was released on 2024-02 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Truth and Traceability in Physics and Metrology by : Michael Grabe
Download or read book Truth and Traceability in Physics and Metrology written by Michael Grabe and published by Morgan & Claypool Publishers. This book was released on 2018-10-05 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metrological data is known to be blurred by the imperfections of the measuring process. In retrospect, for about two centuries regular or constant errors were no focal point of experimental activities, only irregular or random error were. Today's notation of unknown systematic errors is in line with this. Confusingly enough, the worldwide practiced approach to belatedly admit those unknown systematic errors amounts to consider them as being random, too. This book discusses a new error concept dispensing with the common practice to randomize unknown systematic errors. Instead, unknown systematic errors will be treated as what they physically are- namely as constants being unknown with respect to magnitude and sign. The ideas considered in this book issue a proceeding steadily localizing the true values of the measurands and consequently traceability.
Book Synopsis Principles and Practice in Ophthalmic Assisting by : Janice K. Ledford
Download or read book Principles and Practice in Ophthalmic Assisting written by Janice K. Ledford and published by CRC Press. This book was released on 2024-06-01 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time is an incredibly valuable resource for ophthalmic and para-optometric personnel, whether they are still studying on their way to certification or they are already in the trenches in daily practice. To keep up, they need a single, cohesive text containing everything they need to learn. Principles and Practice in Ophthalmic Assisting: A Comprehensive Textbookmeets that need, covering all subject areas in detail while also maintaining a readable, user-friendly style. Editors Janice Ledford and Al Lens have gathered a prestigious team of over 40 contributors, all of them ophthalmic and optometric medical personnel, who actively perform the tasks they write about. Their time-tested expertise is like having a group of specialists right by your side to show how it’s done and answer questions. From A-scan to zygoma, Principles and Practice in Ophthalmic Assisting: A Comprehensive Textbookincludes everything ophthalmic and para-optometric personnel need to know to effectively perform their duties, assist their patients, and advance their careers. Each chapter is written in a friendly manner and follows an established framework, making it easy to digest any new information or as a quick reference to the material needed. Chapters also include valuable “tricks of the trade” that could only come from authors with intimate knowledge of their topics. Topics covered: General ophthalmic knowledge Ophthalmic skills Optical skills Ophthalmic medical sciences Surgical services and skills Administrative skills Whether perfecting current skills, learning new ones, or studying for exams, Principles and Practice in Ophthalmic Assisting: A Comprehensive Textbook makes both a perfect learning tool for students and a complete reference tool for staff whether they are new to the eyecare industry or have years of experience.
Book Synopsis Ocular Rigidity, Biomechanics and Hydrodynamics of the Eye by : Ioannis Pallikaris
Download or read book Ocular Rigidity, Biomechanics and Hydrodynamics of the Eye written by Ioannis Pallikaris and published by Springer Nature. This book was released on 2021-05-26 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the concept of ocular rigidity, the biomechanical properties and hydrodynamics of the human eye. The basics of anatomy and physiology are explored and the relevant data for the clinician are emphasized throughout the book. The engineering aspects as well as the clinical interpretation are presented to provide context. Ocular Rigidity, Biomechanics and Hydrodynamics of the Eye summarises recent evidence on ocular rigidity, but also provides a complete presentation of the data so far. The authors have recently worked on ocular rigidity corneal and globe biomechanics and hydrodynamics and the new, up-to-date data on the subject are highlighted in each chapter. The aim is to provide the framework or the understanding of these parameters and to determine their relevance in health and disease. This book will be an essential read for all practicing ophthalmologists looking to gain a more in-depth understanding of this interesting area of research particularly in refractive surgery and glaucoma.
Book Synopsis Corneal Biomechanics by : C.J. Roberts
Download or read book Corneal Biomechanics written by C.J. Roberts and published by Kugler Publications. This book was released on 2017-05-15 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: While lecturing in recent months at a number of prominent institutions, I asked some of the residents and fellows whether and how they might benefit from a book on corneal biomechanics. The typical response was the look of a deer caught in the headlights as they tried to intuit the “appropriate” answer, but had little understanding or insight as to why this would be an important and useful knowledge base for them now, or in the future. I then posed the question differently. “Would a book that explained corneal biomechanical principles and testing devices and their application in detecting eyes at risk for developing keratoconus and post-LASIK ectasia, understanding the biomechanical impact of specific types of keratorefractive surgery and riboflavin UV-A corneal collagen cross-linking, and the impact of corneal biomechanics on the fidelity of intraocular pressure measurement and risk for glaucoma progression be of interest?” Framed in this context, the answer I got was a resounding, “Yes!” Therein lies a fundamental disconnect that highlights both the opportunity and need to educate all ophthalmologists about this nascent field. This comprehensive book is strengthened by the breadth of contributions from leading experts around the world and provides an important resource for ophthalmologists at all levels of training and experience. It gives a panoramic snapshot of our understanding of corneal biomechanics today, bridging the gap between theoretical principles, testing devices that are commercially available and in development as well as current and potential future clinical applications. While there has been a long-held appreciation that all types of keratorefractive surgery have an impact and interdependence on corneal biomechanics and wound healing, the initial finite element analyses that were applied to understand radial keratotomy were limited by incorrect assumptions that the cornea was a linear, elastic, homogenous, isotropic material.1 With the advent of excimer laser vision correction, critical observations indicated that Munnerlyn’s theoretic ablation profiles did not account for either lower or higher order (e.g. spherical aberration) refractive outcomes,2 suggesting that there were important components missing from the equation—e.g., corneal biomechanics and wound healing. In a seminal editorial, Roberts3 pointed out that the cornea is not a piece of plastic, but rather a material with viscoelastic qualities. Since that time, much has been learned about spatial and depth- related patterns of collagen orientation and interweaving, as well as the biomechanical response to different keratorefractive surgeries that sever tension-bearing lamellae, as the cornea responds to and redistributes stress induced by IOP, hydration, eye rubbing, blinking and extraocular muscle forces.3-6 The first reports of post-LASIK ectasia7 highlighted the need to identify a biomechanical signature of early keratoconus as well as corneas at high risk of developing ectasia irrespective of their current topography or tomography. The introduction of two instruments into clinical use—the Ocular Response Analyzer (ORA) and the Corneal Visualization Scheimpflug Technology (Corvis ST)—that allow measurement of various biomechanical metrics further catapulted the field. The availability of these instruments in routine clinical settings allowed the systematic study of the effect of age, collagen disorders, collagen cross-linking, corneal rings, flaps of various depths, contour, sidecut angulation, pockets, and flockets, just to name of few. Future application of biomechanics to the sclera may improve our understanding of the development and prevention of myopia, as well as scleral surgeries and treatments under development for presbyopia. It was appreciated by Goldmann and Schmidt that corneal thickness and curvature would influence the measurement of applanation tonometry. The recent ability to measure some corneal biomechanical metrics have led to IOP measurement that may be more immune both to their influence and the impact of central corneal thickness (CCT). Certain chapters in this book explain how a thin cornea could be stiffer than a thick one and that stiffness is also impacted by IOP, thereby precluding simplistic attempts to adjust IOP measurements using nomograms based upon CCT alone. Also highlighted is how corneal hysteresis, the ability of the cornea to absorb and dissipate energy during the bidirectional applanation response to a linear Gaussian air puff, appears to be an independent risk factor for glaucoma progression and rate of progression.9,10 This comprehensive book starts out with a section devoted to outlining basic biomechanical principles and theories, teaching us the language of what Dupps11 has referred to as “mechanospeak”, thus providing a context and common vocabulary to better comprehend the following chapters. By first defining basic concepts such as stress-strain relationships and creep, this theoretical basis is later applied to explain the pathogenesis of corneal diseases, e.g., explaining how a focal abnormality in corneal biomechanical properties precipitates a cycle of decompensation and localized thinning and steepening, clinically expressed as ectasia progression. These early chapters further detail biomechanical differences between in-vivo and ex-vivo testing, between human and animal corneas and sclera, and between methods of testing. The second section provides a thorough description of two FDA-approved devices to measure corneal biomechanics in the clinic (i.e., the ORA and the Corvis ST), as well as an overview of potential future technologies, including OCT with air puff stimulus, ocular pulse elastography, and Brilloiun microscopy. The third and final section of the book is a thorough treatise on how to interpret the metrics derived from the waveform provided by available clinical devices; their adjunct use in ectasia risk screening; the comparative biomechanical impact of various keratorefractive surgeries and corneal procedures such as PRK, LASIK, SMILE, and corneal collagen cross-linking; the impact of corneal biomechanics on IOP measurement; and potential biomechanical markers of enhanced susceptibility to glaucoma progression. This compendium of our current knowledge of corneal biomechanics, its measurement and application, provides a strong foundation to more fully understand advances in keratorefractive and corneal surgery, diseases, and treatments, all of which are interdependent on and influence inherent corneal biomechanical properties and behavior. Both the robust aspects and limitations of our current understanding are presented, including the challenge of creating accurate and predictive finite element models that incorporate the impact of IOP, corneal thickness, geometry, and scleral properties on corneal biomechanics. This book provides a key allowing clinical ophthalmologists and researchers to grasp the basics and nuances of this exciting field and to shape it as it evolves in the future.
Book Synopsis Primary Eye Examination by : Jong-Soo Lee
Download or read book Primary Eye Examination written by Jong-Soo Lee and published by Springer. This book was released on 2019-04-01 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive, in-depth, and up-to-date resource on eye examination that will be of great practical value for ophthalmologists and optometrists. The aim is to guide the practitioner through the diagnostic process and the implications for management of the ocular patient, and in so doing to demonstrate that it is possible to reach appropriate decisions on the basis of eye examination. Every year, existing ocular equipment is being upgraded and new diagnostic equipment is appearing on the market. This book reflects recent progress in upgrading by providing information and guidance on the latest innovations in ocular examination and eye testing while also highlighting the continuing important role of the traditional eye test. The coverage accordingly ranges from such long-established techniques as ophthalmoscopy, tonometry, and slit lamp examination through to the latest advances in OCT technologies, digital fundus photography, confocal scanning laser ophthalmoscopy, ocular ultrasound, and angiography. The authors hope that the book will assist all practitioners who perform ophthalmologic examinations.
Book Synopsis Diagnostic Procedures in Ophthalmology by : HV Nema
Download or read book Diagnostic Procedures in Ophthalmology written by HV Nema and published by JP Medical Ltd. This book was released on 2014-05-30 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: New edition presenting latest developments in ophthalmic diagnostic procedures. Fully revised and many new chapters. Previous edition published in 2009.
Book Synopsis The Ophthalmic Assistant by : Harold A. Stein
Download or read book The Ophthalmic Assistant written by Harold A. Stein and published by Elsevier Health Sciences. This book was released on 2012-08-15 with total page 919 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excel in your clinical responsibilities with The Ophthalmic Assistant. Whether you work in an ophthalmology, optometry, or opticianry setting, this best-selling reference delivers expert practical, up-to-date guidance on ocular diseases, surgical procedures, medications, and equipment as well as paramedical procedures and office management - providing all the knowledge and skills you need to be a valuable asset to your team. A real "how-to" textbook. Consult this full-color visual guide for identification of ophthalmic disorders, explanations of difficult concepts, and depictions of the newest equipment used in ophthalmology and optometry - with over 1,000 illustrations. Refer to the practical appendices for quick-reference information on hospital/practice forms for more efficient patient record keeping, conversion tables, numerous language translations, ocular emergencies, pharmaceuticals, and more. Update your practical knowledge of ophthalmic tests and procedures. Confidently prepare for certification or recertification exams with comprehensive and practical information on the exam process for ophthalmic and optometric assistants. Optimize your results with OCT imaging and other innovative technologies used in today's ophthalmic offices, clinics, and hospitals. Stay up to date with new drugs being used to treat a diverse range of eye diseases and disorders. Learn how to assist the newest refractive cataract surgery procedures. Update your knowledge of CPR procedures. Access the fully searchable contents online, plus a downloadable image gallery, at www.expertconsult.com. Practical guidance to help you tackle the ophthalmic challenges and cases you face everyday
Book Synopsis Clinical Glaucoma Care by : John R. Samples
Download or read book Clinical Glaucoma Care written by John R. Samples and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 667 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glaucoma Clinical Care: The Essentials is a pragmatic, slimmer companion volume to the more academically focused text “The Glaucoma Book” by the same editors. This new book is a thoroughly updated manual for the day-to-day diagnosis and management of glaucoma patients by comprehensive ophthalmologists and optometric physicians. Its 33 chapters are authored by world renowned experts in clinical care and basic research, providing evidenced-based research, office examination skills, clinical pearls, and up-to-date reviews of the scientific literature on glaucoma, as wel l as extensive graphics and tables to accompany the text. Glaucoma Clinical Care: The Essentials is the one book to have and consult when confronted with a problematic glaucoma patient sitting in your exam chair as it is a thorough presentation of glaucoma medications, laser, and incisional glaucoma surgeries, complete with commentaries on advantages and disadvantages of the different therapies.
