JAN 2014

EyeWorld is the official news magazine of the American Society of Cataract & Refractive Surgery.

Issue link: https://digital.eyeworld.org/i/233841

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Page 11 of 66

January 2014 December 2013 May EW NEWS & OPINION 9 ASCRS update In the journal … January 2014 Innovator in premium IOLs to give 2014 Charles D. Kelman Innovator's Lecture by Cindy Sebrell ASCRS¥ASOA Director of Marketing and Communications Minimum amount of astigmatism that should be corrected Eloy A. Villegas, PhD, Encarna Alcón, MSc, Pablo Artal, PhD Investigators in this case series of 54 eyes set out to determine the smallest amount of astigmatism correction that would make an actual difference in maximizing visual performance. They found that there was no significant connection between visual acuity and amount of astigmatism. When it came to high-contrast letters, astigmatism correction only improved visual acuity by 0.3 D and was very inconsistent between subjects. When astigmatism correction was measured in conjunction with low-contrast visual acuity, investigators found this changed randomly. While mean image quality values were increased by the correction of astigmatism, this was limited by higher order aberrations in cases where astigmatism was higher than 0.3 D. It also did not significantly impact visual performance. Investigators concluded that for most, visual acuity was not degraded by astigmatism below 0.5 D. They emphasized that astigmatism correction smaller than 0.5 D would likely be of limited clinical value. Laboratory science: light scattering and transmittance of cadaver eye-explanted IOL Caleb Morris, BA, Liliana Werner, MD, PhD, Daniel Barra, MD, Erica Liu, MD, Shannon Stallings, MD, Anne Floyd, MD, MS The aim in this study was to consider how IOLs of different materials, explanted from cadaver eyes, transmitted light. Included here were 49 pseudophakic cadaver eyes. Investigators determined that among hydrophobic acrylic IOLs the three-piece lens had the highest levels of surface light scattering as well as the longest implantation duration in this category. Meanwhile investigators found relatively low light-scattering levels for silicone, hydrophilic acrylic, and PMMA lenses. Of these, the one-piece looped and three-piece PMMA IOLs as well as the plate silicone lenses had the longest implantation duration and lowest lightscattering levels for lenses of this type. The conclusion reached here was that light scattering increases with implantation time and occurs most readily with hydrophobic acrylic IOLs. When it came to IOL light transmittance, no significant effect of surface light scattering was found. Special report: adoptions of intracameral antibiotic prophylaxis of endophthalmitis Peter Barry, MD, FRCS In 2006, the European Society of Cataract and Refractive Surgeons Endophthalmitis Study Group determined that use of intracameral cefuroxime at the end of cataract surgery was beneficial in keeping endophthalmitis at bay. But how many practitioners are actually incorporating this in their regimens? To ascertain current intracameral cefuroxime practice patterns, a survey of 250 ophthalmic surgeons across Europe was conducted. Routine use of intracameral antibiotics for cataract surgery was reported by 74% of respondents, who claimed that they nearly always included these in their surgery. Those who didn't include intracameral antibiotics in their cataract regimens most frequently cited lack of an approved commercial preparation. Concerns about use of off-label preparations included risks of contamination and apprehension about possible dilution errors. If an approved commercially available single-dose cefuroxime product became available, however, more than 90% said that they would use this. Warren E. Hill, MD, FACS A prominent surgeon and leading innovator in premium intraocular lens implant surgery has been selected to deliver the prestigious Charles D. Kelman Innovator's Lecture at the 2014 ASCRS•ASOA Symposium & Congress in Boston. Warren E. Hill, MD, FACS, will deliver his lecture, titled "Something Borrowed, Something New: Improved Accuracy for IOL Power Selection," at 10 a.m. on Monday, April 28, during the ASCRS Innovators Session. All registered attendees of the ASCRS meeting are invited to attend the lecture. Dr. Hill, a member at large of the ASCRS Governing Board, is medical director of East Valley Ophthalmology in Arizona, where he has worked for more than 27 years. After earning his medical degree from the University of Arizona, he completed his ophthalmology continued on page 10 Save the Date! Saturday, April 26, 2014 7:00 Ð 9:30 AM Boston Convention and Exhibition Center www.eyeworld.org CME credit is not available for Corporate Mornings programs.

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