Your surgeon can help you decide which lens may be best for you. For nearly two decades, “presbyopia-correcting” intraocular lenses (IOLs) have been available to post-cataract surgery patients, but for a variety of reasons they have garnered only modest interest.
An example of an accommodating lens is the Crystalens.When light enters a monofocal lens, it is bent to a focus point.However, the trade off with multifocal lenses, such as the Re Zoom and Re STOR lenses, may be increased glare and halos at nighttime, as well as less crisp distance vision, versus the Crystalens.As such, the proper lens choice is a matter of personal fit for a patient.With monofocal IOLs, the lens bends the light so that it will form a focus point on the retina of the eye.
A surgeon can chose an IOL that focuses light best coming from distant objects, or a stronger powered IOL that focuses light better from near objects.As the power of the lens becomes stronger, its ability to bend light more sharply is increased.Since the lens is monofocal, the light can only be bent to one focus point at a time.According to , presbyopia-correcting lenses only account for 2.4% of total IOLs implanted globally in 2014.Moreover, use of these IOLs has grown only 6% per year since 2010. New presbyopia-correcting IOLs, including accommodating and toric accommodating designs, are being developed with an eye toward expanding the stunted market.However, light cannot be focused from both distant and near objects at the same time with a monofocal lens.