Eyeworld

O phthalmology is an incredibly evolving field of medicine with respect to diag- nostics and treatments from the cornea to the retina. When performing cata- ract surgery, we not only need to keep in mind all of the new technology to perform cataract surgery itself, but also all the adjuvant technology and equipment to optimize refractive and overall visual outcomes. It is truly an excit- ing time for ophthalmologists and their patients, and we have to continually revisit techniques and technology to make sure we are current and up to date. As such, in this issue of EyeWorld, we revisit astigmatism and all the new diagnostics, technologies, and treatment modalities available to help us diagnose and treat astigmatism to optimize our patients' visual outcomes. We often question how to truly measure astigmatism most effectively. Kendall Donaldson, MD, Preeya Gupta, MD, Vance Thompson, MD, and Tal Raviv, MD, eloquently guide us through the latest available technology and devices and how to use the measurements effectively. They also help us understand the best calculations to use. However, they do warn us to remember and respect the ocular surface when proceeding. We learn from some of our colleagues different ways to correct corneal astigmatism. Michael Greenwood, MD, Brandon Baartman, MD, Eliza- beth Yeu, MD, and Kevin Miller, MD, reflect on determining and correcting total corneal astigmatism. They delve into the different treatment modalities such as toric IOLs and LRIs and femto AKs and the accuracy and advantages of each. We then hear about the current views on AKs from Uday Devgan, MD, and Eric Donnenfeld, MD, specifically about classic AK and femto AK and the differences in treatment. They review the amounts to treat and any spe- cific issues with respect to regression. The experts on IOL calculations and posterior corneal astigmatism, Douglas Koch, MD, and Warren Hill, MD, help us understand posterior corneal astigmatism for toric IOL implantation. They review pearls for mea- surements and technology available but also stress that we need to remem- ber to calculate the anterior corneal astigmatism accurately as well. Finally, we visit astigmatism and how it pertains to presbyopia correct- ing IOLs. Michael Patterson, DO, Tal Raviv, MD, and Richard Lindstrom, MD, guide us through the amount of astigmatism that will be tolerated and thus need to be treated with these specialty IOLs. They also enlighten us on the use of corneal surface treatment of astigmatism versus some of the IOLs with a toric component. This is an action packed and educational issue on astigmatism, which is sometimes still a bit of a challenge in calculating and treating. I know that this issue will aid me in making informative decisions in the care of my patients with respect to astigmatism correction, and I hope you will find it as illuminating as I do. EW World view Revisiting astigmatism The news magazine of the American Society of Cataract & Refractive Surgery A S C R S October 2018 Volume 23, number 10 ASCRS Executive Director Steve Speares sspeares@ascrs.org Editorial Editor Amy Goldenberg amy@eyeworld.org Managing Editor Stacy Jablonski stacy@eyeworld.org Senior Staff Writer/Digital Editor Ellen Stodola ellen@eyeworld.org Senior Staff Writer Liz Hillman liz@eyeworld.org Production Graphic Designer Julio Guerrero julio@eyeworld.org Graphic Design Assistant Susan Steury susan@eyeworld.org Production Manager Cathy Stern cathy@eyeworld.org Editorial Production Assistant Taylor Wise taylor@eyeworld.org Contributing Writers Stefanie Petrou Binder, MD Berlin, Germany Vanessa Caceres Bradenton, Florida Rich Daly Arlington, Virginia Lauren Lipuma Washington, D.C. Chiles Aedam R. Samaniego Muntinlupa, Philippines Michelle Stephenson Roanoke, Virginia Senior Contributing Writer Maxine Lipner Nyack, New York Advertising Sales ASCRSMedia 4000 Legato Road Suite 700 Fairfax, VA 22033 703-591-2220 Fax: 703-591-0614 eyeworld@eyeworld.org www.eyeworld.org Paul Zelin paul@eyeworld.org Molly Phillips molly@eyeworld.org Classified Sales Cathy Stern cathy@eyeworld.org EyeWorld Special Projects and Events Jessica Donohoe jessica@eyeworld.org Shelly Dixon shelly@eyeworld.org Anne Le anne@eyeworld.org ASCRS Publisher: EyeWorld (ISSN 1089-0084) is published monthly by ASCRS Ophthalmic Services Corp., 4000 Legato Road, Suite 700, Fairfax, VA 22033-4055; telephone: 703-591-2220; fax: 703-591-0614. Printed in the U.S. Editorial Offices: EyeWorld News Service, 4000 Legato Road, Suite 700, Fairfax, VA 22033-4055; toll-free: 800-451-1339, 703-591-2220; fax: 703-591-0614; email: eyeworld@eyeworld.org Advertising Offices: ASCRSMedia, 4000 Legato Road, Suite 700, Fairfax, VA 22033-4055; toll-free: 800-451-1339, 703-591-2220; fax: 703-591-0614; email: eyeworld@eyeworld.org Copyright 2018, ASCRS Ophthalmic Services Corp., 4000 Legato Road, Suite 700, Fairfax, VA 22033-4055. All rights reserved. No part of this publication may be reproduced without written permission from the publisher. Letters to the editor and other unsolicited material are assumed intended for publication and are subject to editorial review and acceptance. Subscriptions: Requests should be addressed to the publisher. Annual subscription prices: Individual: 1 year, $120; 2 years, $220; 3 years, $320. Institutional: 1 year, $250; 2 years, $330; 3 years, $425. 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Postmaster: Send change of address to EyeWorld, 4000 Legato Road, Suite 700, Fairfax, VA 22033. Periodical postage paid at Fairfax, VA 22033 and at additional mailing offices. The ideas and opinions expressed in EyeWorld do not necessarily reflect those of the editors, publisher, or its advertisers. P U B L I S H I N G S T A F F Rosa Braga-Mele, MD, Cataract editor Like EyeWorld on Facebook: facebook.com/EyeWorldMagazine Follow EyeWorld on Twitter: twitter.com/EWNews Find EyeWorld on social media Follow EyeWorld on Instagram: eyeworldnews

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