EyeWorld India September 2016 Issue

52 September 2016 EWAP CATARACT/IOL There’s residual - from page 51 Taking - from page 45 keratoconus, significant basement membrane dystrophy, prior corneal refractive surgery, or traumatic corneal scarring, beware of the use of toric IOLs in this situation. Corneal topography is an important tool to analyze the regularity of the astigmatism,” he said. Dr. Hardten said that while most of the time physicians will be on target with their initial astigmatism corrections, they should have a plan for patients with residual astigmatism who have a strong desire to achieve good uncorrected visual acuity. “It is difficult for patients to be told that there is still residual refractive error and that they need to wear glasses for their vision after you have done the initial procedure. Develop the skills and the knowledge to take these patients all the way to spectacle independence for their distance uncorrected vision,” he said. In the end, Dr. Kieval said while toric IOLs can be wonderful, residual astigmatism postop is not uncommon. Fortunately, there are strategies to successfully treat these surprises. “Be sure to communicate with the patient throughout this process,” Dr. Kieval added. EWAP Editors’ note: Dr. Berdahl has financial interests with Alcon (Fort Worth, Texas), Abbott Medical Optics (Abbott Park, Illinois), ClarVista Medical (Aliso Viejo, California), and Calhoun Vision (Pasadena, California). Dr. Hardten has financial interests with Abbott Medical Optics and Oculus (Arlington, Washington). Dr. Kieval has financial interests with Abbott Medical Optics, Alcon, and Shire Pharmaceuticals (Lexington, Massachusetts). Contact information Berdahl: john.berdahl@vancethompsonvision.com Hardten: drhardten@mneye.com Kieval: jkieval@lexeye.com outcomes for eyes with an axial length of 22.0 mm or lower compared with all other formulas. That research, led by Dr. Wang (Dr. Hill was one of several co- authors), evaluated six IOL power calculation formulas and included 77 eyes. “For the axial hyperope, as was found in the ARVO study, the RBF method gave very good accuracy, and we now have something additional to use for these unusual eyes,” Dr. Hill said. “The amazing ±0.50 D accuracy of greater than 98% [in the study presented at the ASCRS•ASOA Symposium & Congress] for the high axial myope was a surprise even for us.” The next phase of the project will be an open-access, online calculation website that will make the methodology available to the entire ophthalmic community. “It’s a fair statement that when completed, this will truly have been a worldwide collaborative effort,” Dr. Hill said. This month, the calculator will become available as part of the LENSTAR EyeSuite software (Haag- Streit) as a regular menu item that a user can select, much in the same way a user selects other IOL power calculators, Dr. Hill said. The calculator is available on the ASCRS website. “ASCRS is excited to make the latest IOL calculator available through our website, and we owe an incredible debt of gratitude to Dr. Hill and his team for the work they’ve done to improve cataract surgery outcomes,” said Don Bell , chief operating officer of ASCRS. EWAP Editors’ note: Dr. Hill has financial interests with Alcon and Haag-Streit. Contact information Bell: dbell@ascrs.org Hill: hill@doctor-hill.com