Cataract surgery involves removing the natural lens of the eye and replacing it with an artificial lens (intraocular lens implant or IOL). The plastic artificial lens is permanent, requires no care, and can significantly improve vision.ataract surgery is indicated when the cataract impairs vision to the extent that it interferes with normal daily activities. Cataract extraction is one of the most frequently performed surgical procedures in the world. A cataract is a cloudy or opaque area in the normally clear lens of the eye.
There are 640 acres in a square mile -- there is no such thing as a square acre. And just in case you are interested, 43560 square feet in an acre. idiot detector Â· 1 decade ago
How many acres per sq acre? There is no such thing as a square acre because an acre already is a square unit that is rectangular. So it's a bit of a paradox to try to square one when the dimensions arâ¦e already 66x660 feet (43,560 ft.) Scrooge McDuck once claimed to have three CUBIC acres of space in his money bin. When you consider that even Google defines this in terms of feet to the SIXTH power, the comedy of the size becomes clear.