Cataract surgery is very common. Nearly 4 million Americans undergo cataract surgery each year to restore their vision.
During cataract surgery, the natural clouded lens is replaced with an artificial lens called an intraocular lens (IOL). An IOL can not only restore vision lost to cataracts, but may also correct refractive errors such as nearsightedness (myopia), farsightedness (hyperopia), astigmatism or presbyopia.
