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Irregular Astigmatism
Since the advent of keratorefractive surgery and its rising popularity, irregular astigmatism has become an increasingly important issue for ophthalmologists and optometrists. Despite the success of LASIK and PRK, there are more and more patients experiencing visual quality problems due to the non-physiological modification of the corneal structure. Among these complications, irregular astigmatism is perhaps the most difficult to treat. Every physician who performs keratorefractive surgery understands that in reducing a patient.s refractive error, there is a possibility of creating irreversible effects on visual quality. This text is intended to help prevent and reduce the iatrogenic creation of irregular astigmatism, as well as provide effective treatment when postoperative complications do arise. With the maturation of keratorefractive technology in recent years, effective treatment for iatrogenic irregular astigmatism is quickly developing. It provides everything refractive surgeons, ophthalmologists, and optometrists need to know about this important topic.
Astigmatism
This book explores the development, optics and physiology of astigmatism and places this knowledge in the context of modern management of this aspect of refractive error. It is written by, and aimed at, the astigmatism practitioner to assist in understanding astigmatism and its amelioration by optical and surgical techniques. It also addresses the integration of astigmatism management into the surgical approach to cataract and corneal disease including corneal transplantation.
Astigmatism
Astigmatism is an optical aberration characterized by rays propagating into two perpendicular planes focusing at different distances, thus providing two different foci delimiting an intermediate area of focus called the Conoid of Sturm. This book discusses the types, diagnosis and treatment options of astigmatism. The topics include management of astigmatism in patients after a corneal transplant; power vectors; toric intraocular lenses for the correction of astigmatism during cataract surgery; irregular astigmatism management; and a comprehensive overview of preexisting astigmatism during phacoemulsification.
Surgical Correction of Astigmatism
This book reviews the surgical techniques currently employed for the management of astigmatism, with the aim of providing a clear, comprehensive, step-by-step guide that will help practitioners to optimize outcomes. The book is divided into two sections covering the cutting-edge surgical approaches in cataract and refractive patients. Renowned experts with many years of clinical experience describe options such as incisional techniques, toric intraocular lenses, femtosecond and excimer laser technology. In addition, guidance is offered on preoperative evaluation of astigmatism, candidate identification and classification, and surgical management following penetrating keratoplasty. Supplementary videos of informative sample cases are included to further aid everyday practice.
Practical Astigmatism
The surgical correction of astigmatism is the last frontier to optimizing visual outcomes for patients. Practical Astigmatism: Planning and Analysis is a comprehensive guide to correcting astigmatism from pre-operative planning to post-operative analysis. This provides readers with unique insight to what actually happened surgically: did the astigmatism over or under correct? Was it on-axis or off-axis? With this book, ophthalmologists will be able to analyze previous procedures with the appropriate nomograms and more often achieve targeted outcomes. Dr. Noel Alpins has developed the Alpins Method of astigmatism to provide accurate planning and analysis of astigmatism procedures. His method ...
A Theoretical and Practical Treatise on Astigmatism
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1887 edition. Excerpt: ...hand, the lens is brought very close to the cornea, the horizontal (emmetropic) diameter remains unaltered, while the vertical (myopic) diameter gradually diminishes in size, assuming finally, if sufficiently close, a horizontal oval form. 119. In compound myopic astigmatism, we have, in accordance with the facts just stated, a general progressive enlargement of the disk on removal of the lens.with a greater enlargement and drawing out of that diameter of the disk corre...
Diagnosis and Management of Astigmatism
This book discusses various aspects of astigmatism. In the past few years, major advancements have been made in the field of astigmatism.á This book explores the growth, optics and composition of astigmatism and places this knowledge in the perspective of
