During cataract surgery, your surgeon will remove the cloudy lens completely from the eye. Once removed, the cloudy lens is replaced with an artificial intra-ocular lens (IOL). IOLs are made to mimic a healthy young natural lens, and some types of IOLs can correct astigmatism, myopia, hyperopia and even presbyopia. Some intraocular lenses can be customized to treat astigmatism and can even correct near and far vision, thus increasing vision at multiple distances for activities such as driving and reading.