Significance: Cataract surgery with IOL implantation is the most commonly performed surgical procedure in patients over 60 years old in the United States. Approximately 2 million patients in the US will undergo cataract surgery and IOL implantation this year. While this procedure has undergone numerous refinements over the past 25 years, certain problems remain. In particular, calculations of IOL power are sometimes imprecise because of improper pre-operative measurements, post-operative astigmatism from irregular wound healing, or variability in placement of the IOL.

© 2004 Optical Society of America

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