Oct In Lamellar Corneal Transplantation

Anterior segment optical coherence tomography (AS-OCT) is a valuable tool in corneal transplantation surgery. In deep anterior lamellar keratoplasty (DALK), AS-OCT gives valuable information on preoperative decision process. AS-OCT image of the recipient cornea helps the surgeon to decide whether to proceed with a big bubble DALK or a manual dissection. Preoperative AS-OCT imaging of recipient stroma can also predict Descemet membrane perforation during big bubble induction. Intraoperative AS-OCT assures reaching the proper depth in order, and postoperatively, a surgeon can objectively assess the Descemet membrane and donor association and define complications such as a double anterior chamber. Before deciding for a Descemet membrane endothelial keratoplasty (DMEK), preoperative stromal scars can be identified with an AS-OCT and might affect the decision of the surgical procedure (DMEK or penetrating keratoplasty). After DMEK, graft detachment can be visualized by AS-OCT and treated accordingly.

Deep anterior lamellar keratoplasty (DALK) is the mainstay of treatment for corneal pathologies sparing the endothelium. This lamellar surgery has undergone a revolution in the past decades. Various techniques and their modifications have been described to make it safe and reproducible so that it can be performed not only by experts but also the novice corneal transplant surgeons. This book describes the evolution of DALK, indications, preoperative evaluation, the various methods of performing DALK and the postoperative outcomes. The issues related to procurement of donor corneas for such cases are discussed. The "different strokes" in DALK include the conventional Melles and the "Big bubble" technique and also the newer modifications such as "Double bubble" technique, cannula assisted DALK, groove and peel technique as well as diamond blade-guided DALK. The different types of modifications presented by eminent lamellar corneal transplant surgeons from all over the world, in this book are an endeavor to make DALK feasible by all corneal transplant surgeons.

I am very proud and excited to introduce to you this book, which provides many interesting indications on how to better understand and handle the world of opticalcoherence tomography (OCT). Reading the chapters, you will be aware that this device is extremely important not just in the clinical practice of retinal diseases, but is also very useful as a surgical tool. Moreover, application of OCT has crossed the borders of the retina and is currently being applied to corneal diseases and glaucoma. I amconfident you will find enough useful information to improve your practice using OCT and to provide a better quality of care for your patients.

"DSEK: What You Need to Know About Endothelial Keratoplasty provides a comprehensive background of EK, where it is today, and where it is headed in the future. Francis W. Price, MD. who was the first to complete DSEK in the United States, along with Marianne Price, PhD, have designed this text to offer a special emphasis on how to perform surgeries along with preventing and managing complications. In addition, a diverse group of contributing authors provides a wide array of insights and tips for better patient outcomes."--BOOK JACKET.

An explanation of this new technology, consisting of optical coherence tomography integrated to the microscope in both anterior and posterior lamellar corneal transplants (DALK, DSAEK, DMEK). The advantages of visualizing the different layers of the host and donor cornea, with specific emphasis in the Descemet-stroma interphase, are explained in the written work and captured in the intraoperative images. This technology makes the procedure safer, increases the surgery success rate and consequently improves the postoperative results in the patient. The surgical technique of the lamellar transplants and its benefits are explained. The advantages of this new technology are analyzed, including visualizing the corneal planes, checking the tissue orientation and ensuring the correct execution of critical surgical steps; all of these help in reducing the technical difficulty of the procedure. Likewise, it is explained that by providing direct transurgical visualization in a screen, there is a potential teaching and academic advantage.

The cornea is the clear, outer layer at the front of the eyeball. It acts as a window to the eye. The cornea helps to focus light rays onto the retina, this image is then transmitted to the brain. When the cornea is damaged, it can become less transparent or its shape can change. This can prevent light reaching the retina and causes the picture transmitted to the brain to be distorted or unclear. A corneal transplant, also known as keratoplasty or a corneal graft, is an operation to remove all or part of a damaged cornea and replace it with healthy donor tissue. It is used to improve sight, relieve pain and treat severe infection or damage. One of the most common reasons for a cornea transplant is a condition called keratoconus, which causes the cornea to change shape. (NHS.UK) This book is a guide to corneal transplantation (keratoplasty) for ophthalmic surgeons. Divided into seven sections, the text begins with an overview of evolution, preoperative considerations, and eye banking. The following sections cover a multitude of keratoplasty techniques, including endothelial keratoplasty, and their potential complications. The book concludes with discussion on alternatives to corneal transplantation. The third edition of this comprehensive manual has been fully revised, with new topics added, to provide surgeons with the latest advances in the field. A selection of operative videos can be accessed via a QR code provided in the book. The previous edition (9788184488593) published in 2010.

The Novartis Foundation Series is a popular collection of the proceedings from Novartis Foundation Symposia, in which groups of leading scientists from a range of topics across biology, chemistry and medicine assembled to present papers and discuss results. The Novartis Foundation, originally known as the Ciba Foundation, is well known to scientists and clinicians around the world.

The definitive corneal surgery reference! From its valuable review of the general anatomy of the cornea to its highly visual, hands-on guidance to the field's latest developments and surgical procedures, Lamellar Corneal Surgery is the most authoritative and comprehensive guide to the topic available. In 10 state-of-the-art sections and 63 chapters, Lamellar Corneal Surgery: Offers detailed coverage of both anterior and posterior types of lamellar corneal surgical techniques and instruments Illuminates techniques and key concepts in every chapter, with more than 1000 full-color clinical and intraoperative photographs and other illustrations throughout Explains the terminology and abbreviations used within the subfield of lamellar corneal surgery Includes a valuable section devoted to pediatric corneal surgery Covers rarer issues such as burn trauma Includes a DVD featuring 11 surgical video clips

Corneal transplantation is a widely practised surgical procedure. Lamellar techniques are favoured replacing penetrating keratoplasty (PK). Endothelial keratoplasty (EK) has been adapted as an alternative in the treatment of corneal endothelial disorders whereby Descemet’s membrane and the endothelium are replaced. Pre-Descemet’s endothelial keratoplasty (PDEK) is the latest surgical technique for corneal transplantation. This book is a step by step guide to PDEK for practising ophthalmologists. Divided into five sections, the text begins with the basics explaining corneal anatomy, pre-operative assessment, general techniques in keratoplasty, and the principles of PDEK. The following chapters discuss surgical techniques, special situations, and complications and results. The text covers numerous clinical scenarios and concludes with a section on miscellaneous topics such as OCT guided PDEK, eye bank preparation, and cosmetic iris implant complications. The text is further enhanced by surgical photographs and includes an interactive DVD ROM demonstrating PDEK techniques. Key points Step by step guide to Pre-Descemet’s endothelial keratoplasty (PDEK) Explains surgical techniques for numerous clinical scenarios Includes miscellaneous topics such as OCT guided PDEK and cosmetic iris implant complications Accompanying DVD ROM demonstrates PDEK techniques

Part of the Essentials in Ophthalmology series, this atlas is designed to comprehensively cover optical coherence tomography of the anterior segment of the eye. The aim is to improve knowledge of the fundamentals of OCT technology for anterior segment, clarify the differences with posterior segment OCT and emphasize the immense relevance and usefulness that anterior segment OCT study has for diagnosis, therapeutic orientation, surgical guidance, and improvement in patient management. Atlas of Anterior Segment Optical Coherence Tomography is organized into comprehensive chapters on the following topics: fundamentals, technologies and technological differences among platforms, application of OCT, corneal OCT angiography, as well as case-based chapters. Numerous highly-detailed figures, illustrations and photographs make this an ideal resource for the corneal specialist seeking further instruction on this cutting-edge technology. The case-based chapters include such conditions as bowman dystrophies, trauma, cataract, glaucoma, sclera, refractive surgery, ocular infections, and are structured to facilitate the consultant surgeon by providing practical information applicable to practical cases in their practice.