Download or read book Visual Prosthesis and Ophthalmic Devices written by Joyce Tombran-Tink and published by Springer Science & Business Media. This book was released on 2007-12-08 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume details the latest technology in treating eye injuries and infections. It provides insight into the most up-to-date and established treatment options. The volume focuses on what can currently be achieved with a variety of ocular prostheses as well as what the future holds. Coverage reviews issues such as intraocular lens implants, biocompatibility of materials, retinal implants, testing models, and software designs.

Download or read book Visual Prosthesis written by Jeffrey N. Weiss and published by Springer Nature. This book was released on 2022-08-22 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the millions of people with untreatable blindness the thought of a visual prosthesis that would allow them to live a normal life has always been a distant hope. There have been intermittent bright spots that periodically fan that hope such as when Dr. Dobelle’s visual prosthesis patient drove a car in an empty parking lot. This book will serve as an update of the work in developing a visual prosthesis. Chapters discuss the physiologic and engineering issues, alternative strategies, and patents, as well as recent research studies. Visual Prosthesis - A Concise Guide is a must-have resource for ophthalmologists, neurologists, engineers and physicists.

Download or read book Retinal Prosthesis written by Mark S. Humayun and published by Springer. This book was released on 2018-01-17 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intended as a useful and practical guide primarily oriented toward ophthalmic practitioners involved in retinal prosthesis implantation and post-operative visual rehabilitation, this book focuses on the Argus II Retinal Prosthesis and its revolutionary incorporation into the practice. The reader will get an update on patient selection, expected visual outcomes, surgical implantation techniques, and post-operative visual rehabilitation. Retinal Prosthesis - A Clinical Guide to Successful Implementation is written in a clear and concise manner and includes diagrams and high quality photographs to demonstrate best practices in surgical techniques and desired outcomes. Covering topics such as history of retinal prostheses, bioengineering considerations, clinical therapies, and other therapies and future directions, this book is written for practicing ophthalmologists, residents, and medical students interested in retinal implants.

Download or read book Visual Prosthetics written by Gislin Dagnelie and published by Springer Science & Business Media. This book was released on 2011-02-19 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Visual Prosthetics provides an in-depth analysis of the principles of operation, current state, anticipated developments, and functional aspects of visual prosthetics restoring sight to visually impaired individuals. This volume uniquely describes the human visual system in health and disease in a pedagogical and didactic manner, fitting to professionals and researchers with a bioengineering background. Readers will find a balanced overview of electrical, molecular chemical and synthetic chromophore stimulation, in addition to the biophysics and psychological aspects of vision restoration. Unlike competitive texts, this introduction also includes the need and methods for functional evaluation and rehabilitation. Professionals in the field of biomedical engineering and graduate and postgraduate researchers will find Visual Prosthetics a valuable reference.

Download or read book Advances in Retinal Vision Prosthesis A Bionic EYE A comprehensive Review written by Dr. Hakim Saboowala and published by Dr.Hakim Saboowala. This book was released on 2019-10-09 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vision researchers throughout the world have been working, since 1950, towards the ambitious goal of restoring a functional level of vision to the blind via electrical stimulation of the visual pathways. Groups based in Australia, USA, Germany, France and Japan report progress in the translation of retinal visual prosthetics from the experimental to clinical domains, with two retinal visual prostheses having recently received regulatory approval for clinical use. Regulatory approval for cortical visual prostheses is yet to be obtained; however, several groups report plans to conduct clinical trials in the near future, building upon the seminal clinical studies. An attempt has been made in this informative Booklet to discuss the general principles of visual prostheses employing electrical stimulation of the visual pathways, focusing on the retina and visual cortex as the two most extensively studied stimulation sites. Further to state that the surgical and functional outcomes reported to date for retinal and cortical prostheses, concluding with a brief discussion of novel developments in this field and an outlook for the future, has also been described precisely in this review for the enthusiastic Medicos. …..Dr.H.K.Saboowala. M.B.(Bom) M.R.S.H.(London)

Download or read book Artificial Vision written by Veit Peter Gabel and published by Springer. This book was released on 2016-11-24 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents and analyses the most recent research dedicated to restoring vision in individuals who are severely impaired or blind from retinal disease or injury. It is written by the leading groups worldwide who are at the forefront of developing artificial vision. The book begins by discussing the difficulties in comparing and interpreting functional results in the area of very low vision and the principal prospects and limitations of spatial resolution with artificial tools. Further on, chapters are included by researchers who stimulate the surface or the pigment epithelial side of the retina and by experts who work on stimulating the optic nerve, the lateral geniculate body and the superficial layers of the visual cortex. Artificial Vision: A Clinical Guide collates the most recent work of key artificial vision research groups to explain in a comparable and stringent order their varying approaches, the clinical or preclinical outcomes and their achievements during the last years. Senior ophthalmic fellows and academic practitioners will find this guide to be an indispensable resource for understanding the current status of artificial vision.

Download or read book Handbook of Neuroengineering written by Nitish V. Thakor and published by Springer Nature. This book was released on 2023-02-02 with total page 3686 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Handbook serves as an authoritative reference book in the field of Neuroengineering. Neuroengineering is a very exciting field that is rapidly getting established as core subject matter for research and education. The Neuroengineering field has also produced an impressive array of industry products and clinical applications. It also serves as a reference book for graduate students, research scholars and teachers. Selected sections or a compendium of chapters may be used as “reference book” for a one or two semester graduate course in Biomedical Engineering. Some academicians will construct a “textbook” out of selected sections or chapters. The Handbook is also meant as a state-of-the-art volume for researchers. Due to its comprehensive coverage, researchers in one field covered by a certain section of the Handbook would find other sections valuable sources of cross-reference for information and fertilization of interdisciplinary ideas. Industry researchers as well as clinicians using neurotechnologies will find the Handbook a single source for foundation and state-of-the-art applications in the field of Neuroengineering. Regulatory agencies, entrepreneurs, investors and legal experts can use the Handbook as a reference for their professional work as well.​

Download or read book Webvision written by Helga Kolb and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Clinical Ocular Prosthetics written by Keith R. Pine and published by Springer. This book was released on 2015-07-10 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first textbook to offer a comprehensive account of ocular prosthetics and the evidence used to underpin and support this field of healthcare. It does so by bringing together information from ophthalmology, prosthetic eye and contact lens literature, and from experts actively engaged in these fields. The book describes the psychological, anatomical and physiological aspects of eye loss as well as surgical procedures for removing the eye, patient evaluation, constructing prosthetic eyes (including prosthetic and surgical techniques for dealing with socket complications), the socket’s response to prosthetic eyes, prosthetic eye maintenance and the history of prosthetic eyes. Though primarily intended for prosthetists, ophthalmologists, ophthalmic nurses, optometrists and students in the fields of ocular medicine, maxillofacial medicine and anaplastology, the book also offers a useful resource for other health workers and family members who care for prosthetic eye patients, and for those patients seeking a deeper understanding of the issues affecting them than they can find elsewhere.

Download or read book Advances in Eye Surgery written by Patricio Pacheco and published by BoD – Books on Demand. This book was released on 2016-02-24 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a comprehensive, practical guidebook that provides a clear overview and update of current modern techniques of ocular surgery. The chapters will be of interest to a wide audience. The chapters are written by experts with special interest and extensive clinical experience in the topics.

Download or read book Artificial Sight written by Mark S. Humayun and published by Springer Science & Business Media. This book was released on 2007-09-30 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes advances in implantable neural stimulation technology to restore partial sight to people who are blind from retinal degnerative diseases such as age-related macular degeneration and retintis pigmentosa. Many scientific, engineering, and surgical challenges must be surmounted before widespread practical applications can be realized. The book summarizes the state of research and clinical practice in the field and reviews the current ideas and approaches of its leading researchers and practitioners.

Download or read book Implantable Neural Prostheses 2 written by David Zhou and published by Springer Science & Business Media. This book was released on 2010-07-10 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Signi?cant progress has been made in the development of neural prostheses for restoration of human functions and improvement of the quality of life. Biomedical engineers and neuroscientists around the world are working to improve the design and performance of existing devices and to develop novel devices for arti?cial vision, arti?cial limbs, and brain-machine interfaces. This book, Implantable Neural Prostheses 2: Techniques and Engineering Approaches, is part two of a two-volume sequence that describes state-of-the-art advances in techniques associated with implantable neural prosthetic devices. The techniques covered include biocompatibility and biostability, hermetic packaging, electrochemical techniques for neural stimulation applications, novel electrode materials and testing, thin-?lm ?exible microelectrode arrays, in situ char- terization of microelectrode arrays, chip-size thin-?lm device encapsulation, microchip-embedded capacitors and microelectronics for recording, stimulation, and wireless telemetry. The design process in the development of medical devices is also discussed. Advances in biomedical engineering, microfabrication technology, and neu- science have led to improved medical-device designs and novel functions. However, many challenges remain. This book focuses on the engineering approaches, R&D advances, and technical challenges of medical implants from an engineering p- spective. We are grateful to leading researchers from academic institutes, national laboratories, as well as design engineers and professionals from the medical device industry who have contributed to the book. Part one of this series covers designs of implantable neural prosthetic devices and their clinical applications.

Download or read book Neuromodulation written by and published by Academic Press. This book was released on 2009-05-05 with total page 1089 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neuromodulation will be the first comprehensive and in-depth reference textbook covering all aspects of the rapidly growing field of neuromodulation. This book provides a complete discussion of the fundamental principles of neuromodulation and therapies applied to the brain, spinal cord, peripheral nerves, autonomic nerves and various organs. The textbook is highly structured and organized into overarching sections that cover chronic pain, movement disorders, psychiatric disorders, epilepsy, functional electrical stimulation, cardiac, gastrointestinal, genitourinary and organ neuromodulation. The fundamental principles of electricity and infusion, neural tissue interface, biomedical engineering, neuromodulation devices, basic science, neuroanatomy, neurophysiology, imaging and mechanisms are emphasized. In addition to providing details pertaining to the state-of-the-art current practice, innovative and emerging applications are discussed in specific chapters. Finally, the textbook provides specific chapters focusing on the technical aspects of the various neuromodulation procedures as well as technical specifications of various implantable devices. All of the contributors to Neuromodulation represent leading experts in the field. The editors are internationally renowned in their respective fields of neuromodulation, pain management, functional neurosurgery and biomedical engineering. Neuromodulation will be the first and foremost authoritative text on neuromodulation therapies and will establish the gold standard that defines the field for years to come. Key Features The first comprehensive reference on the emerging field of Neuromodulation Editors and authors include all leading figures in the field, and the leaders of the International Neuromodulation Society Over 90 chapters on topics ranging from a layout of the fundamentals (e.g. neuroanatomy, plasticity, bioelectrical effects, infusion therapies), solutions for the biomedical engineering challenges (e.g. materials, how to preserve normal function etc.), to a rundown of the existing applications and their future promise Over 1200 pages in splendid full color, richly illustrated Important areas of application include: control of chronic pain delivery of drugs to the nervous system via implanted devices control of epilepsy, Parkinson, etc. functional restoration, e.g. visual, auditory, restoration after stroke, restoration of motor function after traumatic events stimulation of body organs via neural devices (incl. the heart, abdominal organs, genitourinary organs) overview over newly emerging fields - control of obesity, blood pressure, tinnitus, brain injury, neurodegenerative diseases, brain-machine interfaces

Download or read book Surgical Ophthalmic Oncology written by Sonal S. Chaugule and published by Springer Nature. This book was released on 2019-10-03 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designed as an easy-to-use, practical guide to tumors of the eye, lids, and orbit, this Open Access book comprehensively addresses surgical treatment and management of diseases related to ophthalmic oncology. Surgical Ophthalmic Oncology: A Collaborative Open Access Reference is an ideal reference for general ophthalmologists, surgeons, fellows and trainees around the world who encounter these diseases in the care of their patients. Notably, this book includes considerations for those ophthalmologists offering subspecialty care in environments with limited access to advanced technology and instrumentation. Individual chapters address diagnostic indications, pre-operative and post-operative concerns, and provide detailed explanations of surgical techniques required to manage various eye cancer ailments with help of ample illustrations. High-quality videos included throughout the book provide readers with the opportunity to review surgical steps in real-time as a learning tool. Chapters thoroughly cover tumors of eyelid, cornea and conjunctiva, orbit as well as intraocular tumors, while later chapters discuss ophthalmic radiation therapy. The book concludes with a section on ophthalmic pathology which details essential guidelines on relevant aspects from specimen collection and transport, to interpretation of the pathology report. Surgical Ophthalmic Oncology: A Collaborative Open Access Reference is a unique and necessary valuable resource for ophthalmologists, trainees, and related medical professionals working in underserved areas in providing quality care for patients suffering from ocular cancers.

Download or read book Eye and Instruments written by Isolde den Tonkelaar and published by . This book was released on 1996 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains ophthalmological instruments and articles for examination, treatment, and instruction from the period 1853-1903 from the historical collection of the former Netherlands Hospital for Eye-Patients in Utrecht. Instrument entries include the name of the instrument, inventor or designer, instrument-maker, and function and development of the instrument.

Download or read book Real Time Hardware Vision Processing for a Bionic Eye written by Horace Edmund Josh and published by . This book was released on 2015 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: A recent objective in medical bionics research is to develop visual prostheses - devices that could potentially restore the sight of blind individuals. The Monash Vision Group is currently working towards implementing a fully autonomous direct-to-brain vision implant called the Gennaris. Although research in this field is progressing quickly, initial implementations of these devices will be quite naive, offering very basic levels of vision. The vision is anticipated to be binary - that is with black and white pixels - and a low resolution of several hundred pixels. Improving this dramatically is currently improbable, as it would require significant advancement in electrode stimulation technology and substantial research into the complexities of the visual cortex. This PhD project aims to contribute to the development of the Gennaris and other bionic vision devices, in the hope of improving the quality of life for future patients. More specifically, the key goals of this work have been to develop a portable real time visual prosthesis simulator that is suitably representative of anticipated vision expected of the Gennaris; to investigate the potential capabilities of future patients under this limited vision, and possible image processing techniques that can be used to improve their performance; and to investigate the feasibility of integrating 3D depth sensing and advanced functionality that could aid navigation. An emphasis of this work has been high framerate, low latency and real time operation. An immersive real time simulator system, based on a Field Programmable Gate Array architecture, has been developed called the Hatpack Simulator. This system improves upon limitations of platforms in existing research. The Hatpack is portable, weighing only 3 kilograms, operates at 60 frames per second with a constant low latency of 17 ms, and is low in power consumption, able to last up to 4 hours on a full charge. Five psychophysics trials have been carried out in order to evaluate the effectiveness of various 2D image processing functions implemented, and the ability of users to complete simple tasks that resemble everyday activities. Results of the psychophysics experiments show that the reduction in user capabilities due to binary and low resolution degrading of vision is significant. This motivates the use of 3D sensing to assist with image representations for bionic vision. The integration of a second generation Microsoft Kinect depth sensor has been investigated and a new hardware plane fitting algorithm based on least squares has been achieved. An implementation of this has been applied to the detection and highlighting of tables and free floor space in a real time end-to-end system running at 60 frames per second.

Download or read book Search for Paradise written by Jens Naumann and published by Xlibris Corporation. This book was released on 2012-08-31 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jens Naumann, a typical energetic young man of 17 had just moved out of his parent’s home in Northern British Columbia, moving into a railway camp as an employee with the British Columbia Railway. All goes well as Jens enjoys his new found freedom, treasuring his driver’s license and its associated freedom of travel. Then on a wintry day in 1981, fate rears its ugly head and strikes him blind in his left eye. Jens quickly rearranges his life to accommodate his new found fear - that of losing his remaining eye now that the true vulnerability of his eyesight is revealed. As his life continues onwards despite the initial readjustment, he finds ultimate happiness in his new marriage to his young wife Lorri, and just when life stands at its threshold of paradise exploring fatherhood along with the beauty of travel and thrill, his worst nightmare becomes reality not once, but twice in the most bizarre series of unforeseen incidents of bad luck; as Jens is totally blinded with no foreseeable chance of seeing again according to the best medical experts. Jens tries his best to adjust to this unwanted situation, exploring conventional methods of rehabilitation to live with blindness, as well as using imaginative, totally unheard - of activities in order to pass his time in a hope of someday being able to see again despite all the odds stacked against him. Close to the turn of the century, Jens unexpectedly receives news of an American Medical Device Engineer, Dr. William H. Dobelle, inviting blind adults as patients for his newly developed artificial vision system designed to provide limited vision via visual cortex stimulation. Dr. Dobelle claims that his system has a good chance in functioning based on previous experimenting with volunteers, at the same time classifying the surgical procedure as minor. The system and its related components is complicated; consisting of not only the implants, but a series of “electrical sockets” protruding from the patients head to which an array of computer boxes and stimulator hardware is connected and worn by the patient. Jens is determined to be one of the patients, regardless of the remoteness of the chance of being one out of literally millions of blind people in the World possibly lining up to have this procedure in hopes of ending their blindness for once and for all. To his absolute surprise, Jens is accepted as the first patient for this procedure and slowly builds a relationship with Dr. Dobelle as Jens overcomes obvious barriers of raising enough money for the very expensive procedure, as well as fighting the challenges of relentless forces working against him for his involvement in the Dobelle vision project. Armed with preconceived ideas of how a research institute should be run, Jens travels overseas for the various stages of the procedure, only to find the most astonishing facts of what goes on in the heart of a renowned medical research institute. Not only is Jens looking at the workings of the Dobelle Institute from the view of a patient, but in short time Jens is hired by the firm as Patient Representative, providing further exploration yet on the inner most details concerning a research company and its treatment of the 15 additional implanted patients. Throughout the book, Jens describes the devastation, exhilaration, disappointment, elation, and confusion that attempts at sight recovery, medical intervention, media propaganda, and ethical boundaries conjure in the most illustrative intensity. The manner in which the book ends is most indescribable; one could view it as the final straw, the beginning of a new era, the curse of the unforgiven, the sadness of a crushing reality, the beginning of a good job left unfinished; or that of the birth of a new expert compelled to unleash the new found knowledge for the whole World to thrive. Just as many questions are answered, many more yet are opened and left so far undiscovered. Search for Paradise is ce