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
Name: terri Question: How many acres are in a square mile? Hi Terri, In farming communities a square plot of land which is 1 mile by 1 mile is referred to as a section of land. It contains 640 acres. A section is usually divided into four equal parts which are called quarter sections, and this is the size plot that farmland is typically sold in. Each quarter section consists of 160 acres.