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
Hi Emily, A mile is a unit of length and a square foot measure of area so there is no way to convert one to the other. Length and area are different concepts. There are 43,560 square feet in an acre and therefore there are 72.5 43,560 square feet in 72.5 acres. My dictionary says that hence means therefore or for this reason.