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The VERION Image Guided System www.eyeworld.org Utilizing the latest cataract instrumentation and IOLs to help the surgeon achieve desired patient outcomes Supplement to EyeWorld Daily News, Sunday, April 27, 2014 This supplement is sponsored by Alcon. A little-appreciated aspect of IOL power calculations is that it is a multi-part process, with each part individually having the potential to determine the refractive outcome. Axial measurements, keratometry, the formula being used, the construction of the capsulorhexis, etc., all play a role. The paradox of intraocular lens power calculations goes something like this: Make only one individual part of a multi-part process perfect, and overall outcomes are not neces- sarily improved. But, have one part incorrect, and a refractive surprise is guaranteed. Stated differently, all parts must be optimized for the best possible refractive outcomes. A testament to continuously improving technology is that cataract surgeons are now being judged by their patients and their peers by their refractive outcomes. If you visit 10 different ophthalmol- ogy practices, you are very likely to see a wide range of approaches and instrumentation for preoperative measurements and calculations. Optical biometry has gone a long way toward standardizing the measurement process, but there remains room for improvement. The best approach is one that gives consistent results, with the overall purpose being accuracy. Both consistency and accuracy can be achieved by following a set plan: checking for accuracy during each step of a pre-determined and consis- tently repeated process. The VERION Image Guided System (Alcon, Fort Worth, Texas) represents an integrated approach developed to help improve the quality of refractive outcomes by streamlining the process of measurement, calculation, and implantation with the single goal of reducing variability. Preoperative measurements The process begins with the refer- ence unit, which captures a high- resolution image of the patient's eye. The software locates the limbus and auto-detects the location of scleral vessels and iris features, which are used for auto-registration with the intraoperative digital marker. The steep and flat meridians are also identified in an unambiguous way, and this is automatically transferred to the planning software. Axial measurements can be transferred to the planning software. For the Warren Hill, MD This supplement was produced by EyeWorld and sponsored by Alcon. The doctors featured in this supplement received compensation from Alcon for their contributions to this supplement. Copyright 2014 ASCRS Ophthalmic Corporation. All rights reserved. The views expressed here do not necessarily reflect those of the editor, editorial board, or the publisher, and in no way imply endorsement by EyeWorld or ASCRS. by Warren Hill, MD Please refer to pages 6 and 7 for important product information about the Alcon products described in this supplement. " The VERION Image Guided System allows the surgeon to incorporate a new process to do better than what most surgeons are currently doing with best-in-class diagnostics and planning. " continued on page 3 The VERION Image Guided System is composed of the VERION Reference Unit, which would reside in the clinical practice, and the VERION Digital Marker, which can be attached to a LenSx Laser and/or the most currently available surgical microscopes.

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