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Invited Commentary
December 2015

State-of-the-Art of Intraocular Lens Power Formulas

Author Affiliations
  • 1Pacific Eye Specialists, Daly City, California
  • 2Department of Ophthalmology, University of California, San Francisco
JAMA Ophthalmol. 2015;133(12):1436-1437. doi:10.1001/jamaophthalmol.2015.3844

We are firmly ensconced in the era of refractive cataract surgery. During the past 2 decades, several advances have improved the ability to achieve desired refractive outcomes. Small-incision phacoemulsification has significantly decreased surgically induced astigmatism. Preexisting astigmatism can now be modulated with toric intraocular lenses (IOLs) as well as corneal arcuate incisions performed manually or with a femtosecond laser. Use of the femtosecond laser has also standardized the shape and diameter of capsulorrhexis. Use of partial coherence interferometry has improved the accuracy and reproducibility of axial eye length measurements and aberrometry has enabled intraoperative estimation of corneal astigmatism and power. The use of multifocal and accommodative IOLs has begun to address presbyopia.