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Chapter 6: The Basics of the Alpins Method

Alpins Method of Astigmatism Analysis

Chapter 6 explores surgically induced astigmatism using Alpins method of astigmatism analysis.

Practical Astigmatism: Planning and Analysis book order -

Golf analogy, Alpins Method target induced astigmatism vector (TIA), surgically induced astigmatism vector (SIA), difference vector (DV) Now the Alpins Method has been adopted by the major Ophthalmology Journals, including JCRS, JRS and Ophthalmology. Let’s discuss the Alpins’ Method and what it actually involves. Well the fundamentals of the Alpins’ Method involves the relationship between 3 basic vectors. The TIA is the Target induced astigmatism vector which is actually the astigmatic treatment, what you put into the laser or what you put in to your nomogram for limbal relaxing incisions. Or even the power of the Toric implant at the corneal plane. The SIA is the change that you have measured from pre-op to post-op astigmatism, the Surgically induced astigmatism vector And then the third is what we call the Difference vector or DV and that is an interesting one because it is actually a very objective means of measuring how successful the surgery has been. It is how much you have missed the astigmatic target by and if you have corrected all the targeted astigmatism then the DV will be zero



ASSORT® software is a program that uses the Alpins Method of astigmatism analysis in refractive, corneal and cataract surgery. This program helps with the effectiveness of correcting astigmatism by analysing and reporting astigmatism results as well as learning more on surgically induced astigmatism.

Learn More About Alpins Method of Astigmatism Analysis from Us

Learning and understanding this practice is a great way to help improve your services and better serve patients and those that come to you for advice. Our book and software are designed to give you the comprehensive knowledge you need to learn this theory and out in into practice.

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