Download or read book History of Ophthalmology written by Harold E. Henkes and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the eyeball is indented in total darkness, within less than 200 mil liseconds an oval or quarter-moon shaped spot of light is perceived in the part of the visual field corresponding to the indented region of the retina. In the seconds following, this phosphene extends across the whole visual field and alters in structure during further eyeball indentation. It is then seen as irregular large bright spots of light, finely structured moving light grains ('light nebula') and stationary bright stars. Regular geometrical patterns appear only when both eyes are indented simultaneously [1]. When the eyeball deformation is released, part of the retina again lights up for another one or two seconds and curved light lines are seen following the course of the larger retinal vessels (Fig. 1). In the following we will review the history of this phenomenon, which played an important role during the first 2200 years of vision theories and in the development of models to explain normal vision. 2. Pre-Socratic philosophers, Plato and Aristotle Alcmaeon of Croton (6-5th century B. C. ), who was a member of the Pythagoraean sect and one of the founders of Greek medicine, was the first to describe mechanical deformation of the eyeball leading to light sensa tions. According to Aristotle's pupil Theophrast of Eresos, Alcmaeon report ed that 'the eye obviously has fire within,for when the eye is struckfireflashes out' [2, p. 88].
Download or read book Optical Coherence Tomography in Age Related Macular Degeneration written by Gabriel Coscas and published by Springer Science & Business Media. This book was released on 2009-07-25 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid or even dramatic progress has been made in the field of AMD over recent years, leading to a constant revision of basic concepts. A wide range of fundus imaging modalities are now available, and this book explains the respective value of each technique. The information provided by OCT is presented logically by comparison with plain films, autofluorescence, fluorescein angiography, or indocyanine green angiography. Meticulous biomicroscopic examination of macular changes and the essential value of fluorescein angiography for the detection of anatomical alterations of the macula and for precise evaluation of lesions and their course by indocyanine green angiography have naturally led the author Gabriel Coscas to analyze the new data provided by OCT.
Download or read book New Developments in Ophthalmology Nijmegen 16 18 October 1975 written by A.F. Deutman and published by Springer. This book was released on 1976-06-30 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symposium held at Nijmegen, The Netherlands, October 16-18, 1975
Download or read book The Vitamin A Story written by R.D. Semba and published by Karger Medical and Scientific Publishers. This book was released on 2013-07-01 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shows how vitamin A deficiency – before the vitamin was known to scientists – affected millions of people throughout history. It is a story of sailors and soldiers, penniless mothers, orphaned infants, and young children left susceptible to blindness and fatal infections. We also glimpse the fortunate ones who, with ample vitamin A-rich food, escaped this elusive stalker. Why were people going blind and dying? To unravel this puzzle, scientists around the world competed over the course of a century. Their persistent efforts led to the identification of vitamin A and its essential role in health. As a primary focus of today’s international public health efforts, vitamin A has saved hundreds of thousands of lives. But, we discover, they could save many more were it not for obstacles erected by political and ideological zealots who lack a historical perspective of the problem. Although exhaustively researched and documented, this book is written for intellectually curious lay readers as well as for specialists. Public health professionals, nutritionists, and historians of science and medicine have much to learn from this book about the cultural and scientific origins of their disciplines. Likewise, readers interested in military and cultural history will learn about the interaction of health, society, science, and politics. The author’s presentation of vitamin A deficiency is likely to become a classic case study of health disparities in the past as well as the present.
Download or read book Neuro Ophthalmology written by Andrew G. Lee and published by Springer. This book was released on 2019-01-01 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers an overview on the most recent advances in global neuro-opthalmic care. Global variation in the incidence and prevalence of specific neuro-ophthalmic conditions results in geographic differences in differential diagnosis, evaluation, management, and treatment of specific disorders. It covers a variety of disorders from optic neuritis, idiopathic intracranial hypertension to traumatic optic neuropathy. To understand the key differences in neuro-ophthalmic health care, this book has gathered recognized experts from around the world to describe and define these regional and geographic variations of care. By highlighting various international approaches to diagnosing and treating neuro-ophthalmic disorders, this book will be an essential guide for neuro-ophthalmologists, ophthalmologists, and neurologists seeking to build upon their clinical skills in a global context.
Download or read book Current Advances in Ophthalmic Technology written by Parul Ichhpujani and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the latest technological advances in various ophthalmology subspecialties: from the latest glaucoma shunt devices to mobile adaptors for posterior segment evaluation, this book has it all. It gives readers a valuable head start for adopting the uber-new and cutting-edge products now available on the market. Being familiar with these new products and technologies will help both new and established ophthalmologists make effective and efficient choices, while also helping their practices stand out from the crowd. Perhaps no other branch of medicine is as technology-oriented as ophthalmology: be it lasers, fiber optics, robotics, stem cells or nanoparticles, every cutting-edge step that "Research and Development" takes is rapidly integrated into everyday eye practice. As part of the series "Current Practices in Ophthalmology", this volume is intended for residents, fellows-in-training, generalist ophthalmologists, specialists and vision science researchers alike.
Download or read book Evidence based Physical Diagnosis written by Steven R. McGee and published by Saunders. This book was released on 2007 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clinical reference that takes an evidence-based approach to the physical examination. Updated to reflect the latest advances in the science of physical examination, and expanded to include many new topics.
Download or read book Toxoplasma Gondii written by Louis M. Weiss and published by Academic Press. This book was released on 2013-08-10 with total page 1109 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 2e of Toxoplasma gondii reflects the significant advances in the field in the last 5 years, including new information on the genomics, epigenomics and proteomics of T. gondii as well as a new understanding of the population biology and genetic diversity of this organism. T. gondii remains the best model system for studying the entire Apicomplexa group of protozoans, which includes Malaria, making this new edition essential for a broad group of researchers and scientists. Toxoplasmosis is caused by a one-celled protozoan parasite known as T. gondii. The infection produces a wide range of clinical syndromes in humans, land and sea mammals, and various bird species. Most humans contract toxoplasmosis by eating contaminated, raw or undercooked meat (particularly pork), vegetables, or milk products; by coming into contact with the T. gondii eggs from cat feces; or by drinking contaminated water. The parasite damages the ocular and central nervous systems, causing behavioral and personality alterations as well as fatal necrotizing encephalitis. It is especially dangerous for the fetus of an infected pregnant woman and for individuals with compromised immune systems, such as HIV-infected patients. - Completely updated, the 2e presents recent advances driven by new information on the genetics and genomics of the pathogen - Provides the latest information concerning the epidemiology, diagnosis, treatment and prevention of toxoplasmosis - Offers a single-source reference for a wide range of scientists and physicians working with this pathogen, including parasitologists, cell and molecular biologists, veterinarians, neuroscientists, physicians, and food scientists
Download or read book Emergencies of the Orbit and Adnexa written by Bipasha Mukherjee and published by Springer. This book was released on 2016-12-15 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook on orbital, lacrimal and eyelid emergencies deals with such situations in a practical manner guiding the ophthalmologists in accurate handling and making them more proficient and confident in managing vision and life-threatening emergencies. With 51 chapters and more than 350 images, this book covers all the eye emergencies that generalist and specialist ophthalmologists can expect to come across in their day to day practices. It can be argued that the orbit can no more be called ‘Pandora’s Box’ because of the unpredictable nature of its contents. This perception has changed over the years due to the advent of improved diagnostic, in particular, imaging techniques. However, since medical residency provides very little exposure to orbital and adnexal disorders, most clinicians are inexperienced and unsure about their management. Facing an emergency situation where improper management can rapidly worsen the condition leading to blindness or even death of the patient is every ophthalmologist’s nightmare. The emergent nature of these conditions does not always provide for a leeway to refer these patients to an orbit and oculoplasty specialist, who are few and far between. By the time the patient reaches his destination, his vision maybe irrevocably lost. The legal implications of such mismanagement can be significant too. This book is a quick and essential resource to manage and refer eye emergencies with confidence.
Download or read book Introduction to Biophotonics written by Paras N. Prasad and published by John Wiley & Sons. This book was released on 2004-01-16 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paras Prasad’s text provides a basic knowledge of a broad range of topics so that individuals in all disciplines can rapidly acquire the minimal necessary background for research and development in biophotonics. Introduction to Biophotonics serves as both a textbook for education and training as well as a reference book that aids research and development of those areas integrating light, photonics, and biological systems. Each chapter contains a topic introduction, a review of key data, and description of future directions for technical innovation. Introduction to Biophotonics covers the basic principles of Optics Optical spectroscopy Microscopy Each section also includes illustrated examples and review questions to test and advance the reader’s knowledge. Sections on biosensors and chemosensors, important tools for combating biological and chemical terrorism, will be of particular interest to professionals in toxicology and other environmental disciplines. Introduction to Biophotonics proves a valuable reference for graduate students and researchers in engineering, chemistry, and the life sciences.
Download or read book Pediatric Neuro Ophthalmology written by Michael C. Brodsky and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pediatric Neuroophthalmology details the diagnostic criteria, current concepts of pathogenesis, neuroradiological correlates, and clinical management of a large group of neuroophthalmic disorders that present in childhood. Surprisingly distinct from neuroophthalmic disorders afflicting adults, this set of diseases falls between the cracks of most ophthalmology training, and thus, warrants a practical, clinical guide for the practitioner in ophthalmology - the neuroophthalmologist, pediatric ophthalmologist, general ophthalmologist - as well as neurologists and for residents. The authors, leading pediatric ophthalmologists, have taken this difficult subject matter and developed an accessible, user-friendly manual with a detailed approach to the recognition, differential diagnosis, and management of pediatric neuroophthalmologic disorders.
Download or read book Dmso written by Morton Walker D.P.M. and published by Penguin. This book was released on 1993-01-01 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: An easy-to-understand, up-to-date guide on the highly publicized drug, DMSO DMSO—dimethyl sulfoxide—is a simple by-product of wood and has been called a “miracle” drug, capable of relieving pain, diminishing swelling, reducing inflammation, encouraging healing, and restoring normal function. In this groundbreaking work, award-winning health science writer Dr. Morton Walker examines the powerful and compelling case for the use of DMSO in the treatment of many debilitating disease and health-related problems. In DMSO: Nature’s Healer, Dr. Walker cites documented cases of its astounding use in healing and prevention of a host of health disorders, including arthritis, stroke, cancer, mental retardation, and sports and auto injuries. He also recounts the dramatic story of the long struggle to gain FDA approval of DMSO.
Download or read book Wilhelm Conrad R ntgen written by Gerd Rosenbusch and published by Springer. This book was released on 2019-03-20 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, which will appeal to all with an interest in the history of radiology and physics, casts new light on the life and career of Wilhelm Conrad Röntgen, showing how his personality was shaped by his youth in the Netherlands and his teachers in Switzerland. Beyond this, it explores the technical developments relevant to the birth of radiology in the late nineteenth century and examines the impact of the discovery of X-rays on a broad range of scientific research. Röntgen (1845-1923) was born in Lennep, Germany, but emigrated with his family to the Netherlands in 1848. As a 17-year-old he moved to Utrecht, entering the Technical School and living at the home of Dr. Jan Willem Gunning. In this well-educated family he was stimulated to continue his studies at university. In 1868 he received a diploma from the Federal Polytechnic School in Zurich and just a year later completed a PhD in physics. He followed his mentor, August Kundt, to the universities of Würzburg (1870) and Strasburg (1872) and married Anna Ludwig in 1872. In 1879 Röntgen gained his first professorship at a German University, in Giessen, followed by a chair in Würzburg in 1888. Here he discovered X-rays in 1895, for which he received the first Nobel Prize in physics in 1901. From 1900 until his retirement in 1921 he occupied the chair of physics at the Munich University.
Download or read book Encyclopedia of Biology written by Don Rittner and published by Infobase Publishing. This book was released on 2004-08 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains approximately 800 alphabetical entries, prose essays on important topics, line illustrations, and black-and-white photographs.
Download or read book Convergent Strabismus written by L.E. Evens and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the Board of Directors of the Belgian Ophthalmological Soci ety, in its session of November 26th 1978, asked me to prepare a report on strabismus to be presented at the joint meeting of the Dutch and Belgian Ophthalmological Societies to be held on June 13th 1981, I felt greatly honored but still more overwhelmed by the immensity of the task. I took advantage of the complete liberty given to me by the Board of Directors, first to limit the work to one particular form of strabismus, i.e. the convergent comitant form; second, to seek the help of what I thought to be the best strabologists in the Low Countries; third, to aim not at an encyclopedic treatise but at a practical volume destined to the general ophthalmologist. This volume is thus limited to the various aspects of convergent strabismus, more accurately of comitant convergent strabismus. The omission of the word" comitant" is purposely made to avoid the dif fic'ulties accompanying the explanation of this term and all the acroba tics needed to explain that most comitant strabismus are not complete ly comitant. The choice of this particular form of strabismus seems logical. First of all, it is the most common form of strabismus. On the other hand, most principles concerning examination and treatment can with some modifications be applied to other forms of strabismus.
Download or read book Modern Enchantments written by Simon During and published by Harvard University Press. This book was released on 2002 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magic, During suggests, has helped shape modern culture. Devoted to this deceptively simple proposition, During's work gets at the aesthetic questions at the very heart of the study of culture. How can the most ordinary arts—and by “magic,” During means not the supernatural, but the special effects and conjurings of magic shows—affect people?
Download or read book Heat Transfer in Medicine and Biology written by R.C. Eberhart and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt:
