Stability of a three-piece silicone intraocular lens implanted in the capsular bag

odern cataract surgery aims not only to remove lens opacities but also to achieve correction of any refractive error. In addition to restoration of uncorrected visual acuity, correction of preexisting astigmatism is also important, and treatment options for this purpose include corneal limbal relaxing incisions, excimer laser photoablation and toric intraocular lens (IOL) implantation. Shimizu et al. were the first to report the benefit of toric IOL implantation for correction of pre-existing astigmatism, and they emphasized that postoperative IOL rotational stability is crucial in astigmatic correction. Subsequent reports were also concerned with postoperative IOL rotational stability. Smaller corneal incisions have minimized surgeryinduced astigmatism, and technical advances have been beneficial in reducing postoperative IOL rotation in the capsular bag. In recent years, single-piece toric IOLs with acrylic optics materials have become available. However, fixation of the single-piece acrylic IOL in the capsular Original Contribution Kitasato Med J 2013; 43: 10-16