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Traditional cataract surgery has primarily been used to restore distance vision.
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.
A third lens, the accommodating lens, provides a multifocal effect allowing for both near and distance focus.
By moving forward in the back of the eye on small hinges, the lens can change its power in the eye, similar to the process of accommodation of the eye’s natural lens.
With the appearance of accommodating lenses on the market in recent years, inevitable comparisons are now being drawn between multifocal lenses and the latest advancement in IOL technology.