68. Practical Astigmatism: Planning and Analysis
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 preoperative planning to postoperative analysis. T
판매가격 :해외주문 문의주세요
ISBN :978-1-61711-995-8
저자 :Noel Alpins
출판사 :SLACK [출판사 바로가기]
출시일 :2017-09-30
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제품상태 :

Dr. Noel Alpins has developed the Alpins Method of astigmatism to provide accurate planning and analysis of astigmatism procedures. His method focuses on analyzing refractive and corneal astigmatism parameters and using the results in future surgery to improve visual outcomes. The importance of the ocular residual astigmatism (ORA) is detailed when planning astigmatism surgery.

Practical Astigmatism features vector planning for refractive laser surgery as well as planning and analysis applied to cataract and limbal relaxing incisions, in addition to demonstrating graphical analysis of astigmatism using high quality vector and fan diagrams, as used in scientific journals. In addition, hemidivisional analysis of the irregular cornea, corneal coupling in incisional and excimer laser surgery for mixed astigmatism and toric IOL planning with total corneal power using corneal topographic astigmatism (CorT total) are addressed as well.

Some Questions Answered Inside:

  • What is the difference between regular and irregular astigmatism?
  • How do I diagnose each, and how does this affect my surgical technique?
  • Can I incorporate corneal astigmatism when performing excimer laser surgery?
  • Why are my LRIs undercorrecting the astigmatism?
  • Is it safe to perform excimer laser on keratoconus patients?
  • Which corneal astigmatism measure do I choose and what do I do following a refractive surprise?

Practical Astigmatism: Planning and Analysis will help ophthalmologists, optometrists, and technicians alike address each patient’s unique circumstances and act as your in-depth guide to correcting astigmatism.


“For more than three decades I have been listening to, arguing with, and admiring the work of Dr. Noel Alpins in the field of astigmatism.  Despite his remote location on the small island of Australia, his knowledge of astigmatism is at the peak of Mt. Everest.  There are few others who have devoted their careers to understanding and managing astigmatism for which the world of ophthalmology is truly grateful.”  - Robert H. Osher, MD

Noel is an original thinker who took on and conquered the complexities of astigmatism analysis, publishing the seminal papers on the way. His work has formed the cornerstone from which our current understanding and management of astigmatism has been built. He is someone from whom we have all learnt a great deal and this book is a testament to this.” - Dan Z. Reinstein, MD, MA(Cantab), FRCSC, DABO, FRCOphth, FEBO

“For more than two decades, Noel Alpins has been one of our foremost authorities in the implementation and analysis of astigmatism treatment. Now, Noel has organized his many significant contributions into a single comprehensive textbook - a practical road map to navigate our current clinical options.” - David F. Chang, MD


“Very few know about astigmatism like Noel Alpins. Very few indeed know how to analyse astigmatism, how to understand better its structure and its real existence in the human optics and very few indeed transmit this knowledge to others. Noel has been doing this all his life, dedicated among many other important issues, to the development of adequate astigmatism analysis for the adequate correction of astigmatism.” – Jorge L. Alio, MD, PhD, FEBO

“Noel Alpins' new volume provides an overview connecting the many contributions he has made (20 papers he has first authored in the peer reviewed literature since 1993). Few surgeons will have had direct access to all his contributions so the book fulfils a need for surgeons to be able to study his methods and reasoning behind them, of course based on his exceptional clinical experience.” - Emanuel Rosen, B.Sc, MD, FRCSE, FRCOphth.




About the Author


Foreword by Spencer P. Thornton, MD, FACS

Foreword by Dan Z. Reinstein, MD, MA(Cantab), FRCSC, DABO,


Chapter 1       Astigmatism in the Population

Chapter 2       History of Vectorial Analysis of Astigmatism

Chapter 3       A Dilemma: The Conflict Between Incisional and Laser Ablative Approaches

Chapter 4       The Genesis: A Method to the Madness

Chapter 5       The Nonzero Target and Why It Meets Ongoing Resistance

Chapter 6       The Basics of the Alpins Method

Chapter 7       The Astigmatic Indices: Useful Measures That Make It All Worthwhile

Chapter 8       The Flattening, Steepening, and Rotation of Astigmatism

Chapter 9       Ocular Residual Astigmatism: When Zero Is Not the Target

Chapter 10     For Cataract Patients With Astigmatism: Toric Intraocular Lenses

Chapter 11     Analysis and Management of “Refractive Surprises”
                       After Toric Intraocular Lens Implantation

Chapter 12     Corneal Topographic Astigmatism:
                       A Measure of Anterior and Total Corneal Power

Chapter 13     Vector Planning Approach: Optimizing Both
                       Corneal and Refractive Astigmatism

Chapter 14     Corneal Astigmatism: Less Is More

Chapter 15     Not Everyone Has Regular Astigmatism: The Hemidivisional Solution

Chapter 16     Topographic Disparity: Quantifying Corneal Irregularity

Chapter 17     The Perfect Treatment: Reduction and Regularization


Chapter 18     Polar Displays Versus

                       Double-Angle Vector Diagrams

Chapter 19     Clinical Application of the Alpins Method for Clinical Studies

Chapter 20     Regulatory Adoption

Chapter 21     Coupling Concepts

Chapter 22     Mixed Astigmatism

Chapter 23     How to Perform Your Own Corneal and Refractive Vector Analyses

Chapter 24     Software: ASSORT, iASSORT,
                       Web Calculators, VECTrAK

Appendix          Astigmatic Terms and Concepts

Financial Disclosures


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