Evaluation of an accommodating intraocular lens

ABSTRACT

Introduction: Conventional intraocular lenses [IOLs] that focus light at a fixed distance provide excellent visual outcomes in most patients who have cataract extraction. However, most patients require reading glasses or bifocals for near vision, Steinert et al, [1999]. Replacing the natural lens with a multifocal intraocular lens that provides multiple focal distances for both near and distance vision offers an alternative to patients who need near vision correction after cataract surgery, Wolffsohn, et al. [2006]. The optical quality of the retinal image is worse than the retinal image produced with a monofocal IOL. The loss of image quality can affect visual performance and has led to an interest in alternative modalities for correcting near vision in pseudophakic patients, Steinert et al, [1999]. By using the new accommodating IOLs, ophthalmic surgeons will be able to provide a full range of visual focus in each eye of a patient to maintain binocular function while also avoiding visual disturbances that are experienced with monovision and multifocal IOLs, Doane [2004] . The Crystalens AT-45 [Eyeonics], is an accommodating, foldable, multi-piece plate shaped IOL. [Eyeonics Crystalens fact sheet]