EyeWorld Asia-Pacific September 2011 Issue

36 EW CATARACT/IOL September 2011 cataracts] can go from nothing to terrible in the course of a month. In the example Dr. Jaffee presented, I’d aim for plano to –1 D as a good target for the right eye and perhaps use a toric IOL depending on topography.” Toric IOLS are only available at this time to correct about 2 D of regular astigmatism, though. “If someone has astigmatism larger than that, you may not be doing him any favors by implanting a toric lens,” Dr. Devgan said. Dr. Donnenfeld supports performing manual keratotomy in these eyes, but Dr. Devgan advised using whichever software program is preferred. The downside to using any of the typical IOL calculation formulas is that they make an assumption where in the eye the IOL will sit based on the Ks and axial length, so the formulas will assume that because the K values are extreme, the lengths will also be extreme, Dr. Devgan said. Dr. Donnenfeld, while a confirmed advocate of toric lenses in keratoconus, “would never place one if the patient is comfortable with gas permeable contact lenses because they presume a lenticular cylinder of zero. As soon as you place cylinder into the eye, the patient will end up with residual cylinder that will not be CALENDAR OF MEETINGS 2011 - 2012 DATE MEETING VENUE September 17-21 XXIX Congress of the ESCRS www.escrs.org Vienna, Austria October 13-16 24th APACRS Annual Meeting in conjunction with 2011 KSCRS Symposium www.2011apacrs.org Seoul, Korea October 22-25 Annual Meeting of American Academy of Ophthalmology (AAO) www.aao.org Orlando, USA November 17-19 Australasia Society of Cataract & Refractive Surgeons (AUSCRS) www.auscrs.org.au Canberra, Australia November 19-21 Royal Australian and New Zealand College of Ophthalmologists (RANZCO) Annual General Meeting and Scientific Congress www.ranzco.edu Canberra, Australia 2012 February 2-5 70th Annual Conference of All India Ophthalmological Society (AIOC 2012) Kerala, India February 16-20 33rd World Ophthalmologist Congress 2012 Abu Dhabi, United Arab Emirates April 13-16 27th Asia Pacific Academy of Ophthalmology (APAO) www.apaoophth.org Busan, Korea April 20- 24 ASCRS-ASOA Symposium & Congress www.ascrs.org Chicago, IL, USA May 31- June 3 25th APACRS Annual Meeting in conjunction with 14th Congress of Chinese Cataract Society & Chinese Ophthalmological Society www.apacrs.org Shanghai, China June 13-16 35th Annual UC Davis Ophthalmology Symposium Big Island, Hawaii June 15-18 19th International Neuro-Ophthalmology Society Meeting www.snec.com.sg Singapore September 8-12 XXX Congress of the ESCRS www.escrs.org Milan, Italy correctable with a gas permeable lens,” he said. By using a toric lens in Dr. Jaffee’s example, reducing the cylinder to under 4 D “will make the patient much more spectacle correctable, assuming the patient doesn’t wear gas permeable lenses.” Bottom line? “Choose an IOL that will err on the side of leaving the patient myopic,” Dr. Lane said. “I’d rather have a patient end up –1.00 D or –1.50 D than +1.00 D or +1.50 D.” Dr. Jaffee has not yet operated on the patient, but plans on implanting an SN20WF lens (Alcon, Fort Worth, Texas, USA/ Hünenberg, Switzerland) and leaving the patient about –3.00 D, he said. EW Editors’ note: Dr. Devgan has financial interests with Abbott Medical Optics (AMO, Santa Ana, Calif., USA), Alcon, Bausch & Lomb (Rochester, NY, USA), Haag-Streit (Mason, Ohio, USA), and Hoya (Santa Clara, Calif., USA/Tokyo, Japan). Dr. Donnenfeld has financial interests with AMO, Alcon, Bausch & Lomb, and WaveTec. Dr. Lane has financial interests with AMO, Alcon, Bausch & Lomb, and WaveTec. Contact information Devgan: 800-337-1969, devgan@gmail.com Donnenfeld: 516-766-2519, eddoph@aol.com Lane: 651-275-3000, sslane@associatedeyecare.com Combining from page 35