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Specialties
- Comprehensive Ophthalmology
- Cataract Surgery
- IOL Power Calculations
- Eye Diseases
Professional Interests
- The mathematics of intraocular lens power calculations.
- Ophthalmic surgery for the technically complicated, high-risk patient.
- Ophthalmology in developing countries.
- David Chang Lecture. The University of California, San Francisco. San Francisco, California, November 15, 2025.
- Charles Kelman Lecture. Brazilian Association of Cataract & Refractive Surgery. Rio de Janeiro, Brazil. May 24, 2024.
- Richard Lindstrom Lecture. American Society of Cataract & Refractive Surgery. Washington, DC. April 24, 2022.
- John H. Dunnington Lecture. Columbia University Medical Center. New York, New York. April 14, 2022
- Luther Fry Lecture. Kresge Eye Institute, Detroit, Michigan. February 16, 2022
- Jorge N. Buxton Foundation Lecture, New York Eye and Ear Infirmary, New York, NY, November 9, 2019
- Jack S. Guyton Lecture, Henry Ford Hospital, Department of Ophthalmology, Detroit, MI, June 15, 2019.
- Malouf Lecture, University of Maryland College of Medicine, Baltimore, MD, March 26, 2019
- Magistral Lecture, III Simposio de la Cirguía de la Cataracta 2018, San José, Costa Rica. May 24, 2018
- Helen Keller Lecture, University of Alabama Department of Ophthalmology. Birmingham, AL, May 14, 2018
- Harold Ridley Lecture, Snowmass Retina and Eye Conference, Aspen, CO, March 16, 2018
- Magistral Lecture, Salvadorian Association of Cataract and Refractive Surgeons, San Salvador, El Salvador, June 23, 2017
- Harvey E. Thorpe Lecture, Pittsburgh Ophthalmology Society, Pittsburgh, PA, March 17, 2017
- Rayner Medal Lecture, United Kingdom & Ireland Society of Cataract & Refractive Surgeons, London, England, October 21, 2016
- Dario Lorenzetti Memorial Lecture, McGill University, Montréal, PQ, Canada, June 3, 2016
- Raymond C. Cook Lecture, The University of Arkansas, Little Rock, AR, December 10, 2015
- Charles D. Kelman Lecture, The American Academy of Ophthalmology, Las Vegas, NV, November 2015
- IIIC Medal Lecture. The International Intraocular Implant Club, Barcelona, Spain, September 6, 2015.
- Lorand Johnson Lecture, Cleveland Ophthalmological Society, Cleveland, OH, April 14, 2015
- Arthur Lim Lecture, Asia Pacific Association of Cataract & Refractive Surgeons, Jaipur, Rajasthan, India, November 13, 2014
- IIIS Gold Medal Lecture, Indian Intraocular Implant Society, Chennai, Tamil Nadu, India, July 5, 2014
- Charles Kelman Innovator’s Lecture, American Society of Cataract & Refractive Surgery, Boston, MA, April 25, 2014
- William S. and Grace Snyder Lectureship, Vanderbilt University, Nashville, TN, April 4, 2014
- David Paton Medal Lecture, Baylor University, Houston, TX, February 22, 2014
- AUSCRS Gold Medal Lecture, Australian Society of Cataract & Refractive Surgeons, Uluru, NT, Australia, July 4, 2013
- Graham Trope Lecture, Univ. of Toronto 52nd Walter Wright Symposium, Toronto, Ontario, Canada, November 24, 2012
- Harold Stein Lecture, Canadian Society of Cataract & Refractive Surgery. Vancouver, BC, Canada, February 25, 2012
- Floyd Weinstock Lecture, Wills Eye Institute, Philadelphia, PA, April 13, 2011
- Robert M. Curts Lecture, Dartmouth University, Lebanon, NH, June 2, 2010
- David M. Kozart Memorial Lecture, Scheie Eye Institute, University of Pennsylvania, Philadelphia, PA, March 6, 2010
- Sean B. Murphy Lecture, McGill University, Montréal, PQ, Canada, June 5, 2009
- Gold Medal Lecture, International Congress on Advances in Ophthalmology, Mumbai, India, August 23, 2008
- Kenneth C. Swan Lecture, Casey Eye Institute, University of Oregon, Portland, OR, April 14, 2006
- Bernard C. Gettes Lecture, Wills Eye Institute, Philadelphia, PA, March 11, 2006
- Barry and Jack Kayes Lecture, Washington University, St. Louis, MO, December 7, 2005
- John Balian, MD Memorial Lecture, Michigan Keratorefractive Society, Birmingham, MI, June 29, 2002
- Charles H. May Memorial Lecture, New York Academy of Medicine. New York, NY, December 10, 2001
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