EyeWorld Asia-Pacific June 2014 Issue

June 2014 6 EWAP TABLE OF CONTENTS APACRS Secretariat 11 Third Hospital Avenue, Singapore 168751 Fax: (65) 6327 8630 Email: apacrs@snec.com.sg Website: www.apacrs.org P U B L I S H I N G S TA F F Publisher APACRS Charity Wai apacrs@snec.com.sg Donald R. Long don@eyeworld.org APACRS Editorial Kathy Chen kathy.chen@apacrs.org Javian Teh ewap@apacrs.org Christine Shimmon Senior Staff Writer Chiles Aedam R. Samaniego ASCRS Editorial Editor Jena Passut Managing Editor Stacy Majewicz Senior Staff Writer Erin Boyle Staff Writer Ellen Stodola Production Graphic Designer Julio Guerrero Production Assistant Daniela Galeano Contributing Editors Vanessa Caceres – Lakeland, Florida Michelle Dalton – Reading, Pennsylvania Rich Daly – Arlington, Virginia June 2014 Volume 10 • No.2 Enette Ngoei – Singapore Matt Young – Malaysia Senior Contributing Editor Maxine Lipner – Nyack, New York Advertising Sales ASCRS Media 4000 Legato Road Suite 700, Fairfax, VA 22033 (1-703) 591-2220 • fax: (1-703) 273-2963 eyeworld@eyeworld.org • www.eyeworld.org Director Donald R. Long don@eyeworld.org Advertising Sales Manager Jeff Brownstein Jeff@eyeworld.org (1-703) 788-5745 Paul Zelin paul@eyeworld.org (1-703) 383-5729 Classified Sales, Production Manager Cathy Stern cathy@eyeworld.org (1-703) 591-2220 EyeWorld Special Projects and Events Jessica Donohoe Jessica@eyeworld.org (1-703) 591-2220g APACRS Publisher : EyeWorld Asia-Pacific Edition (ISSN 1793-1835) is published quarterly by the Asia-Pacific Association of Cataract & Refractive Surgeons (APACRS), c/o Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751, telephone (65) 6322-7469, fax (65) 6327-8630, email apacrs@snec.com.sg. Printed in Singapore. EyeWorld Asia-Pacific Chinese Edition (ISSN 1521-7566) is jointly published quarterly by the Asia-Pacific Association of Cataract & Refractive Surgeons (APACRS), c/o Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751, telephone (65) 6322-7469, fax (65) 6327-8630, email apacrs@snec.com.sg; and the Chinese Ophthalmological Society (COS), c/o Chinese Medical Association, 42 Dongsi Xidajie, Beijing 100710, PR China, telephone (86-10) 6524-9989 ext 2456, fax (86-10) 6512-3754. Printed in Beijing, PR China. Editorial Offices : EyeWorld Asia-Pacific Edition: Asia-Pacific Association of Cataract & Refractive Surgeons (APACRS), c/o Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751, telephone (65) 6322-7469, fax (65) 6327-8630, email apacrs@snec.com.sg. EyeWorld Asia-Pacific Chinese Edition: Chinese Ophthalmological Society (COS), c/o Chinese Medical Association, 42 Dongsi Xidajie, Beijing 100710, PR China; telephone (86-10) 6524-9989 ext 2456; fax (86-10) 6512-3754. EyeWorld News Service : 4000 Legato Road, Suite 700, Fairfax, VA 22033-4003, USA, toll-free (1-800) 451-1339, telephone (1-703) 591-2220, fax (1-703) 273-2963, email eyeworld@eyeworld.org. Advertising Offices : ASCRSMedia, 4000 Legato Road, Suite 700, Fairfax, VA 22033-4003, USA, telephone (1-703) 591-2220, fax (1-703) 273-2963, email dlong@eyeworld.org. Copyright 2005, Asia-Pacific Association of Cataract & Refractive Surgeons (APACRS), c/o Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751, telephone (65) 6322-7469, fax (65) 6327-8630, email apacrs@snec.com.sg. Licensed through the American Society of Cataract & Refractive Surgery (ASCRS), 4000 Legato Road, Suite 700, Fairfax, VA 22033-4003, USA. 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. The ideas and opinions expressed in EyeWorld Asia-Pacific do not necessarily reflect those of the editors, publishers or its advertisers. Subscriptions : Requests should be addressed to the APACRS publisher, c/o Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751, telephone (65) 6322-7469, fax (65) 6327-8630, email apacrs@snec.com.sg. Back copies : Subject to availability. Contact the APACRS publisher, c/o Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751, telephone (65) 6322-7469, fax (65) 6327-8630, email apacrs@snec.com.sg. Requests to reprint, use or republish: Requests to reprint or use material published herein should be made in writing only to the APACRS publisher, c/o Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751, telephone (65) 6322-7469, fax (65) 6327-8630, email apacrs@snec.com.sg. Change of address : Notice should be sent to the APACRS publisher, c/o Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751, six weeks in advance of effective date. Include old and new addresses and label from a recent issue. The APACRS publisher cannot accept responsibility for undelivered copies. KDN number: PPS1766/07/2013(022955) MCI (P) 160/02/2013 PRK vs. LASIK updated 51 The latest research indicates the two leading photorefractive approaches provide similar outcomes, but specific circumstances can give one advantages over the other by Rich Daly 51 54 59 61 56 56 CORNEA Eye on optical changes post-DSAEK 54 Considering the matter of scatter by Maxine Lipner DEVICES Newer dry eye diagnostic tools show promise 56 Using biomarkers to help quantify dry eye has potential, but more refinement is necessary by Michelle Dalton PHARMA FOCUS A clear-eyed view of preservatives in tears 59 Taking the sting out for patients by Maxine Lipner NEWS & OPINION CSCRS offers clear lens extraction overview 62 A symposium on clear lens extraction at the 2013 ESCRS Congress gave attendees expert opinion from across the globe by Erin L. Boyle Blindness decreases over 20-year time span 64 Tackling blindness around the world by Vanessa Caceres