Step By Step Lenticular Refractive Surgery With Dvd-Rom (Techniques&Technology), Garg
Автор: Garg Название: Instant Clinical Diagnosis In Ophthalmology: Refractive Surgery ISBN: 0071749470 ISBN-13(EAN): 9780071749473 Издательство: McGraw-Hill Рейтинг: Цена: 53650.00 T Наличие на складе: Есть Описание: The book Sides of the Same Coin is the true story of a one-time social service worker, who lost employment and moved into his mother`s home to help care for her amidst mental deterioration and aging. After a major disagreement between siblings, this once-proud worker, who had serviced clients within all walks of the social service realm, was unceremoniously evicted by people who had relied upon his help countless times in their journeys through adult life. Such assistance was even given to their children more times than imaginable. It was during these times, that this worker was unceremoniously told he was no longer welcome in his mother`s home anymore, and since he assisted clients with their housing needs, he could use his knowledge to find suitable housing for himself. That worker was me. This was the start of a venture I never thought I would ever face. I too was appalled at the little assistance other clients received in the shelter system. This will only become worse due to the pandemic. And for the multitude of those who have fallen behind in rent payments, I believe it will only be a matter of time before the courts evict countless such individuals, and give them no choice but to seek false help from the public shelter systems. Read this book and learn what you never expected to see, face or have to experience in your lifetime. The only suitable name for the New York Shelter System is a living hell.
Автор: Weissman Yitzhak Название: Lenticular Imaging: Theory and Practice ISBN: 9655724034 ISBN-13(EAN): 9789655724035 Издательство: Неизвестно Цена: 87360.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание:
This book treats the visual and the optical aspects of lenticular imaging comprehensively. The theoretical discussion is supplemented by numerous examples and figures which explain and illustrate the underlying principles, to make the book accessible and useful for scholars, practitioners, and graphical artists. However, this book is not a practical guide for making lenticular pictures.
The most striking capability of lenticular pictures is the display of depth. 3D lenticular pictures can be enjoyed without any visual aids, and are viewable from within a comfortably large volume. Within this volume, the picture displays change of perspective according to the viewing angle and shows the object with the correct geometry. With proper design, the changes in perspective can be smooth and continuous. These characteristics create a compelling virtual reality illusion, like the effect of holograms.
The tradeoff between the amount of displayed depth and the visual quality is established and discussed. The overall resolution of the picture determines this compromise. Basic mechanisms affecting the overall resolution are optical aberrations and print characteristics. For digital print, it is suggested that if lenticular sheets are adjusted to fit the printer characteristics, the overall resolution may be significantly improved.
The unique optical properties of lenticules and lenticular sheets are crucial for the understanding of lenticular imaging, and, as such, they receive much attention in the book. The optical mechanism of a lenticular picture is explained using simplified, yet accurate models based on classical optical imaging theory. The more advanced subjects of optical resolution and distortions are treated numerically, using ray-tracing methods. The results of this study are presented here for the first time and are used to explain the visual features of lenticular pictures. They are also important for future research and development.
Numerous other topics are essential for understanding and using lenticular imaging. These topics include calibration of lenticular sheets, content preparation for 3D pictures, and viewing space design. All these issues are treated and presented in detail, including many practical examples.
Electronic display systems underwent rapid evolution in recent fifty years. From early bulky, monochrome, and distorted CRT displays, modern flat-panel displays feature vibrant color and perfect geometry. The resolution, contrast, and brightness reached the highest standards of market demands. Perhaps the last challenge remaining to be conquered by display engineers is the creation of a high-quality electronic 3D display that is viewable without any aids, like a lenticular picture. This challenge attracted much attention, but, despite vast efforts, it is still beyond reach.
One of the most popular approaches to making an electronic 3D display is based on lenticular imaging. A separate chapter is devoted to the discussion of this technology. Although electronic and printed displays differ profoundly, the methodology of printed pictures can be used for the study and analysis of electronic lenticular displays, although with several modifications. The book outlines this application, to allow future study and development of such displays benefit from the research presented in this book.
Автор: Barber Shirley Название: The Mermaid Princess: Lenticular Edition ISBN: 0648555747 ISBN-13(EAN): 9780648555742 Издательство: Неизвестно Цена: 14710.00 T Наличие на складе: Невозможна поставка.
Автор: Weissman Yitzhak Название: Lenticular Imaging: Theory and Practice ISBN: 9655724913 ISBN-13(EAN): 9789655724912 Издательство: Неизвестно Цена: 89510.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание:
This book treats comprehensively the visual and the optical aspects of lenticular imaging. The theoretical discussion is supplemented by numerous examples and figures which explain and illustrate the underlying principles, to make the book accessible and useful for scholars, practitioners, and graphical artists. However, this book is not a practical guide for making lenticular pictures. The most striking capability of lenticular pictures is the display of depth. 3D lenticular pictures can be enjoyed without any visual aids, and are viewable from within a comfortably large volume. Within this volume, the picture displays change of perspective according to the viewing angle and shows the object with the correct geometry. With proper design, the changes in perspective can be smooth and continuous. These characteristics create a compelling virtual reality illusion, like the effect of holograms. The tradeoff between the amount of displayed depth and the visual quality is established and discussed. The overall resolution of the picture determines this compromise. Basic mechanisms affecting the overall resolution are optical aberrations and print characteristics. For digital print, it is suggested that if lenticular sheets are adjusted to fit the printer characteristics, the overall resolution may be significantly improved. The unique optical properties of lenticules and lenticular sheets are crucial for the understanding of lenticular imaging, and, as such, they receive much attention in the book. The optical mechanism of a lenticular picture is explained using simplified, yet accurate models based on classical optical imaging theory. The more advanced subjects of optical resolution and distortions are treated numerically, using ray-tracing methods. The results of this study are presented here for the first time and are used to explain the visual features of lenticular pictures. They are also important for future research and development. Numerous other topics are essential for understanding and using lenticular imaging. These topics include calibration of lenticular sheets, content preparation for 3D pictures, and viewing space design. All these issues are treated and presented in detail, including many practical examples. Electronic display systems underwent rapid evolution in recent fifty years. From early bulky, monochrome, and distorted CRT displays, modern flat-panel displays feature vibrant color and perfect geometry. The resolution, contrast, and brightness reached the highest standards of market demands. Perhaps the last challenge remaining to be conquered by display engineers is the creation of a high-quality electronic 3D display that is viewable without any aids, like a lenticular picture. This challenge attracted much attention, but, despite vast efforts, it is still beyond reach. One of the most popular approaches to making an electronic 3D display is based on lenticular imaging. A separate chapter is devoted to the discussion of this technology. Although electronic and printed displays differ profoundly, the methodology of printed pictures can be used for the study and analysis of electronic lenticular displays, although with several modifications. The book outlines this application, to allow future study and development of such displays benefit from the research presented in this book.
Автор: Garg Название: Step By Step Corneal Refractive Surgery With Dvd Rom ISBN: 8180617467 ISBN-13(EAN): 9788180617461 Издательство: JayPee Brothers India Рейтинг: Цена: 36790.00 T Наличие на складе: Невозможна поставка. Описание: This volume demonstrates how incentives can improve the delivery and use of health services in low- and middle-income countries. The authors describe the rationale for introducing incentives tied to achievement of specific health-related targets, and they provide clear guidance about designing, implementing, and evaluating programs that provide incentives to health care providers and patients.
Автор: Priya Narang, William B. Trattler Название: Optimizing Suboptimal Results Following Cataract Surgery: Refractive and Non-Refractive Management ISBN: 1626238952 ISBN-13(EAN): 9781626238954 Издательство: Thieme Verlagsgruppe Рейтинг: Цена: 121110.00 T Наличие на складе: Нет в наличии. Описание: A concise review and comprehensive guide to improving cataract surgery outcomesSignificant advances have been made in refractive surgery in the last decade. Eye surgeons today can leverage many cutting-edge intraocular lens (IOL) technologies such as multifocal, extended depth of field, toric, accommodating, and aspheric. Concurrent innovations including optics, phacoemulsification, superior keratometry and biometry, and posterior cornea evaluation have resulted in improved cataract surgery outcomes. Recent advances in the diagnosis and treatment of cataracts have dramatically improved patient satisfaction following cataract surgery, yet common and rare complications still occur such as dry eye, endophthalmitis, and retinal detachment. Furthermore, only 80% of cataract surgery procedures bring patients to within 0.5 diopters of their needed refraction.Optimizing Suboptimal Results Following Cataract Surgery: Refractive and Non-Refractive Management presents the latest techniques for achieving optimal results and overcoming complications in cataract surgery. Internationally renowned ophthalmic surgery pioneers Priya Narang and William Trattler have created an unparalleled guide to overcoming complex cases and residual refractive errors. The book starts with six chapters on suboptimal causes and considerations, followed by dedicated sections covering refractive and non-refractive enhancements. The fourth section features chapters on keratoconus, cystoid macular edema, endophthalmitis, toxic anterior segment syndrome, and vitritis, as well as intraoperative aberrometry, futuristic approaches and advancements, and telescopic IOLs.Key HighlightsRefractive enhancement procedures including corneal-based procedures such as astigmatic keratotomy, LASIK, PRK, and SMILE; IOL exchange; piggyback IOL; toric IOL; and premium IOLs and associated problemsNonrefractive enhancement procedures including dysphotopsias and surgical management, bullous keratopathy and endothelial keratoplasty, complex IOL issues such as malpositioned IOL and capsular bag, and posterior capsular rupture and IOL lens implantationPractical tips and steps to prevent and manage undesired outcomes30 surgical videos posted online highlight a diverse array of complex cases and technical advances to help prevent suboptimal resultsOphthalmologists, ophthalmology residents, fellows, and subspecialists will greatly benefit from the significant pearls and knowledge presented in this indispensable cataract surgery resource.This book includes complimentary access to a digital copy on https://medone.thieme.com.
Автор: Michael OKeefe Название: Current Understanding & New Techniques in Refractive Surgery ISBN: 162808748X ISBN-13(EAN): 9781628087482 Издательство: Nova Science Рейтинг: Цена: 224920.00 T Наличие на складе: Невозможна поставка. Описание: In this book, we examine the current techniques of refractive surgery, and lesser-known areas, and we describe some of the newer techniques. Our intention is to reinforce our understanding of the basic areas of LASEK, LASIK, dry eye, topography and aberrations. We have added new and controversial areas of research such as refractive surgery to patients with strabismus and paediatric refractive surgery and have highlighted the current understanding of ectasia and its management. Although refractive surgery is popular with up to a 20 year follow up, little is known about the risk of recurring refractive errors. We discuss this in detail and give our own follow-up outcomes. Many regard the frontier as presbyopia, but as it is a moving target, we still lack the information to decide whether the future will be cornea or lens. We discuss the current corneal techniques such as Inlays and Supracor, their advantages and disadvantages. Our target readers are ophthalmologists in training as well as those who practice refractive surgery.
Автор: Garg Название: Surgical Techniques In Ophthalmology Refractive Surgery ISBN: 8184487770 ISBN-13(EAN): 9788184487770 Издательство: JayPee Brothers India Рейтинг: Цена: 127070.00 T Наличие на складе: Невозможна поставка. Описание: Quick reference book for ophthalmologists to sharpen their surgical skills, covering all types of cataract surgical techniques.
Автор: Hui Sun Название: Corneal Collagen Cross-Linking and Femtosecond Laser in Refractive and Cataract Surgery ISBN: 153613192X ISBN-13(EAN): 9781536131925 Издательство: Nova Science Рейтинг: Цена: 83410.00 T Наличие на складе: Невозможна поставка. Описание: The cornea serves as the gateway into the eye for external images. Maintenance of corneal shapes and transparency is critical for refraction. Small changes in the smoothness of the corneal surface or in the total thickness of the cornea can lead to visual distortion. Recently, however, refractive surgery for the transparent cornea has been introduced. In this procedure, the curvature of the cornea is modified either by cutting the stroma or by laser ablation of normal corneal tissue. Given the clinical efficacy of refractive surgery, it is important to understand the anatomical and physiological structure of the cornea such as corneal collagen cross-linking. Multiple commercial femtosecond lasers have been cleared for use by the US Food and Drug Administration for ophthalmic surgery, including use in creating corneal flaps in LASIK surgery. The newest application of femtosecond lasers in ophthalmology is in cataract surgery. In LASIK surgery, all surgery procedures are done in cornea. In cataract surgery, the cornea is also cut with a femtosecond laser. Over the last decade, the field of femtosecond eye surgery has expanded rapidly, supporting the advantages of combined high-ablation precision and minimized collateral tissue effects. One of the most promising applications for femtosecond laser eye surgery has been corneal surgery, namely laser in situ keratomileusis (LASIK) surgery, where the high-pressure laser plasma non-thermally dissociates the dense corneal tissue, thereby enabling lamellar cornea procedures with minimized side effects with the subsequent excimer laser shaping the corneal surface. Millions of people worldwide have been patients for LASIK surgery and have benefited from new forms of technology. LASIK surgery includes three parts: wavefront detection, femtosecond laser flap creation, and excimer laser cornea correction. Some parts of this book focus on femtosecond laser-assisted LASIK surgery, including basic research for femtosecond laser eye surgery and tissue imaging. The newest application of femtosecond lasers in ophthalmology is cataract surgery. Currently, there are a few lasers at or near the point of commercial release, including LenSx (Alcon Laboratories Inc., Fort Worth, Texas), Catalys (Abbott Medical Optics, Santa Ana, California), LensAR (LensAR Inc., Orlando, Florida), Victus (Technolas Perfect Vision and Bausch & Lomb, Rochester, New York), and Femto LDV (Ziemer Ophthalmic Systems AG, Port, Switzerland). All laser systems share a common platformwhich includes an anterior-segment imaging system, patient interface, and femtosecond laser to imageto calculate and deliver the laser pulses. Some parts of this book explain the principle of OCT-guided femtosecond laser cataract surgery. The combination of femtosecond laser surgery and OCT imaging simultaneously guides the development of next generation femtosecond surgical lasers in cataract surgery and explores femtosecond laser surgical strategies.
Название: 2018-2019 basic and clinical science course (bcsc), section 13: refractive surgery ISBN: 1681040395 ISBN-13(EAN): 9781681040394 Издательство: Mare Nostrum (Eurospan) Рейтинг: Цена: 150480.00 T Наличие на складе: Нет в наличии. Описание: Includes eight original videos demonstrating refractive surgical techniques, including the FDA-approved SMILE procedure. Covers the science of refractive surgery, accommodative and nonaccommodative treatment of presbyopia and patient evaluation.Examines specific procedures in refractive surgery and their potential complications, and refractive surgery in ocular and systemic disease. Includes information on lens implants used in the United States and other countries. Both print and eBook users have access to the videos.Upon completion of Section 13, readers should be able to:Identify the general types of lasers used in refractive surgeries.Explain the steps—including medical and social history, ocular examination and ancillary testing—in evaluating whether a patient is an appropriate candidate for refractive surgery.For incisional keratorefractive surgery, describe the history, patient selection, surgical techniques, outcomes, and complications.Explain recent developments in the application of wavefront technology to surface ablation and LASIK.Describe the different types of IOLs used for refractive correction.
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